Mount Vernon weather in July
In July, Mount Vernon sees average daytime highs of 70°F and overnight lows near 55°F, with 1.5 in of rain across 5.6 wet days and about 15.5 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.
Highs climb over the month, from about 67°F in the first days to 72°F by the end. The sky is clear or mostly clear about 48% of the time in July, and the air most often feels dry.
Daylight stretches from about 15 h 48 min at the start of July to 15 hours by month's end. Set against the rest of the year, July is Mount Vernon's 1st-clearest and 11th-windiest month. For the whole year in context, see Mount Vernon's year-round climate.
- Daytime high
- 70°
- 2nd warmest
- Overnight low
- 55°
- 11th coldest
- Rainfall
- 1.5 in
- 5.6 wet days
- Daylight
- 15 h 30 min
- 4:29 AM – 8:01 PM
- Cloud cover
- 44%
- 1st clearest
- Wind
- 3 mph
- 11th windiest
- Solar energy
- 6.27 kWh/m²
- Travel score
- 7.4
- out of 10
Mount Vernon is city in Skagit County, Washington, United States.
- Density
- 1,050/km²
- people per km²
- Founded
- 1870
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Highs climb over the month, from about 67°F in the first days to 72°F by the end.
A typical July day in Mount Vernon reaches about 70°F in the afternoon and slips back to 55°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 79°F. Set against its neighbours, July runs about 6°F warmer than June and on par with August.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 67 | 67 | 67 | 68 | 68 | 68 | 68 | 69 | 69 | 69 | 69 | 69 | 69 | 70 | 70 | 70 | 70 | 70 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 72 | 72 |
| Avg low (°F) | 53 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 67 | 53 |
| 2 | 67 | 54 |
| 3 | 67 | 54 |
| 4 | 68 | 54 |
| 5 | 68 | 54 |
| 6 | 68 | 54 |
| 7 | 68 | 54 |
| 8 | 69 | 54 |
| 9 | 69 | 55 |
| 10 | 69 | 55 |
| 11 | 69 | 55 |
| 12 | 69 | 55 |
| 13 | 69 | 55 |
| 14 | 70 | 55 |
| 15 | 70 | 55 |
| 16 | 70 | 55 |
| 17 | 70 | 56 |
| 18 | 70 | 56 |
| 19 | 71 | 56 |
| 20 | 71 | 56 |
| 21 | 71 | 56 |
| 22 | 71 | 56 |
| 23 | 71 | 56 |
| 24 | 71 | 56 |
| 25 | 71 | 56 |
| 26 | 71 | 56 |
| 27 | 72 | 56 |
| 28 | 72 | 56 |
| 29 | 72 | 56 |
| 30 | 72 | 56 |
| 31 | 72 | 56 |
How July really feels in Mount Vernon
Once humidity and wind are folded in, July averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Mount Vernon weather by month
How July compares with the rest of the year at a glance. July is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 42° / 34° | 10.2 | 19.1 | 9.5 | 8.6 | 0.2 |
| Feb | 44° / 34° | 6.7 | 15.4 | 9 | 9.9 | 0.7 |
| Mar | 48° / 37° | 8.1 | 19.7 | 9.8 | 11.6 | 1.4 |
| Apr | 53° / 41° | 5.8 | 16.6 | 4 | 13.4 | 2.5 |
| May | 60° / 47° | 4.1 | 12.8 | 0.7 | 15 | 4.4 |
| Jun | 64° / 51° | 3.1 | 10.9 | 0 | 15.8 | 5.5 |
| Jul | 70° / 55° | 1.5 | 5.6 | 0 | 15.5 | 7.4 |
| Aug | 71° / 56° | 1.8 | 5.7 | 0 | 14.1 | 7.5 |
| Sep | 65° / 51° | 3.9 | 9.5 | 0 | 12.4 | 6.1 |
| Oct | 55° / 44° | 7.9 | 15.2 | 0.7 | 10.6 | 3.2 |
| Nov | 46° / 37° | 11.4 | 19.4 | 7.7 | 9 | 1.0 |
| Dec | 41° / 33° | 10.0 | 19 | 12.2 | 8.2 | 0.1 |
Cloud cover in July
The sky is clear or mostly clear about 48% of the time in July, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 15% of July, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 50 | 51 | 52 | 53 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 60 | 61 | 62 | 63 | 63 | 65 | 66 | 66 | 68 | 68 | 70 | 71 | 71 | 72 | 72 | 73 | 73 | 73 | 72 |
| Cloudier (%) | 50 | 49 | 48 | 47 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 40 | 39 | 38 | 37 | 37 | 35 | 34 | 34 | 32 | 32 | 30 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 28 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 50 | 50 |
| 2 | 51 | 49 |
| 3 | 52 | 48 |
| 4 | 53 | 47 |
| 5 | 53 | 47 |
| 6 | 54 | 46 |
| 7 | 55 | 45 |
| 8 | 56 | 44 |
| 9 | 57 | 43 |
| 10 | 58 | 42 |
| 11 | 59 | 41 |
| 12 | 60 | 40 |
| 13 | 60 | 40 |
| 14 | 61 | 39 |
| 15 | 62 | 38 |
| 16 | 63 | 37 |
| 17 | 63 | 37 |
| 18 | 65 | 35 |
| 19 | 66 | 34 |
| 20 | 66 | 34 |
| 21 | 68 | 32 |
| 22 | 68 | 32 |
| 23 | 70 | 30 |
| 24 | 71 | 29 |
| 25 | 71 | 29 |
| 26 | 72 | 28 |
| 27 | 72 | 28 |
| 28 | 73 | 27 |
| 29 | 73 | 27 |
| 30 | 73 | 27 |
| 31 | 72 | 28 |
Chance of precipitation in July
Mount Vernon gets around 1.5 in of rain over 5.6 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 19% and peaks near 28% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 28 | 27 | 26 | 25 | 25 | 24 | 23 | 23 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 |
| Rain chance (%) | |
|---|---|
| 1 | 28 |
| 2 | 27 |
| 3 | 26 |
| 4 | 25 |
| 5 | 25 |
| 6 | 24 |
| 7 | 23 |
| 8 | 23 |
| 9 | 22 |
| 10 | 21 |
| 11 | 21 |
| 12 | 20 |
| 13 | 20 |
| 14 | 19 |
| 15 | 19 |
| 16 | 18 |
| 17 | 18 |
| 18 | 17 |
| 19 | 17 |
| 20 | 17 |
| 21 | 16 |
| 22 | 16 |
| 23 | 15 |
| 24 | 14 |
| 25 | 14 |
| 26 | 13 |
| 27 | 13 |
| 28 | 13 |
| 29 | 13 |
| 30 | 13 |
| 31 | 13 |
Humidity in July
Most of July feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the dry band about 63% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 78 | 77 | 76 | 75 | 74 | 73 | 72 | 71 | 70 | 68 | 67 | 66 | 64 | 63 | 61 | 60 | 58 | 58 | 56 | 56 | 55 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 52 |
| Comfortable (%) | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 38 | 38 | 38 | 39 | 39 | 40 | 40 | 41 |
| Humid (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 78 | 20 | 2 | 0 |
| 2 | 77 | 21 | 2 | 0 |
| 3 | 76 | 22 | 2 | 0 |
| 4 | 75 | 23 | 2 | 0 |
| 5 | 74 | 24 | 2 | 0 |
| 6 | 73 | 25 | 2 | 0 |
| 7 | 72 | 26 | 2 | 0 |
| 8 | 71 | 27 | 2 | 0 |
| 9 | 70 | 28 | 2 | 0 |
| 10 | 68 | 30 | 2 | 0 |
| 11 | 67 | 31 | 2 | 0 |
| 12 | 66 | 32 | 2 | 0 |
| 13 | 64 | 33 | 3 | 0 |
| 14 | 63 | 34 | 3 | 0 |
| 15 | 61 | 35 | 4 | 0 |
| 16 | 60 | 36 | 4 | 0 |
| 17 | 58 | 37 | 5 | 0 |
| 18 | 58 | 37 | 5 | 0 |
| 19 | 56 | 37 | 6 | 1 |
| 20 | 56 | 37 | 6 | 1 |
| 21 | 55 | 38 | 6 | 1 |
| 22 | 54 | 38 | 7 | 1 |
| 23 | 54 | 38 | 7 | 1 |
| 24 | 54 | 38 | 7 | 1 |
| 25 | 54 | 38 | 7 | 1 |
| 26 | 54 | 38 | 7 | 1 |
| 27 | 53 | 39 | 7 | 1 |
| 28 | 53 | 39 | 7 | 1 |
| 29 | 53 | 40 | 6 | 1 |
| 30 | 53 | 40 | 6 | 1 |
| 31 | 52 | 41 | 6 | 1 |
Wind in July
Winds average 3 mph in July.
Across July, daily wind ranges from about 3 mph on the calmest days to 3 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 3 | calm |
| 2 | 3 | calm |
| 3 | 3 | calm |
| 4 | 3 | calm |
| 5 | 3 | calm |
| 6 | 3 | calm |
| 7 | 3 | calm |
| 8 | 3 | calm |
| 9 | 3 | calm |
| 10 | 3 | calm |
| 11 | 3 | calm |
| 12 | 3 | calm |
| 13 | 3 | calm |
| 14 | 3 | calm |
| 15 | 3 | calm |
| 16 | 3 | calm |
| 17 | 3 | calm |
| 18 | 3 | calm |
| 19 | 3 | calm |
| 20 | 3 | calm |
| 21 | 3 | calm |
| 22 | 3 | calm |
| 23 | 3 | calm |
| 24 | 3 | calm |
| 25 | 3 | calm |
| 26 | 3 | calm |
| 27 | 3 | calm |
| 28 | 3 | calm |
| 29 | 3 | calm |
| 30 | 3 | calm |
| 31 | 3 | calm |
Sunrise & sunset in July
Daylight runs from about 15 h 48 min at the start of July to 15 hours by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 48 minutes over July. Sunrise moves from 4:17 AM to 4:47 AM, and sunset from 8:08 PM to 7:44 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 15.8 | 15.8 | 15.8 | 15.8 | 15.8 | 15.8 | 15.8 | 15.7 | 15.7 | 15.7 | 15.7 | 15.6 | 15.6 | 15.6 | 15.6 | 15.5 | 15.5 | 15.5 | 15.4 | 15.4 | 15.4 | 15.3 | 15.3 | 15.2 | 15.2 | 15.2 | 15.1 | 15.1 | 15.0 | 15.0 | 15.0 |
| Sunrise (AM) | 4:17 | 4:18 | 4:18 | 4:19 | 4:20 | 4:20 | 4:21 | 4:22 | 4:23 | 4:24 | 4:24 | 4:25 | 4:26 | 4:27 | 4:28 | 4:29 | 4:30 | 4:31 | 4:32 | 4:34 | 4:35 | 4:36 | 4:37 | 4:38 | 4:39 | 4:41 | 4:42 | 4:43 | 4:44 | 4:46 | 4:47 |
| Sunset (PM) | 8:08 | 8:08 | 8:08 | 8:07 | 8:07 | 8:07 | 8:06 | 8:06 | 8:05 | 8:05 | 8:04 | 8:04 | 8:03 | 8:02 | 8:01 | 8:01 | 8:00 | 7:59 | 7:58 | 7:57 | 7:56 | 7:55 | 7:54 | 7:53 | 7:52 | 7:50 | 7:49 | 7:48 | 7:47 | 7:45 | 7:44 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 15.8 | 4:17 | 8:08 |
| 2 | 15.8 | 4:18 | 8:08 |
| 3 | 15.8 | 4:18 | 8:08 |
| 4 | 15.8 | 4:19 | 8:07 |
| 5 | 15.8 | 4:20 | 8:07 |
| 6 | 15.8 | 4:20 | 8:07 |
| 7 | 15.8 | 4:21 | 8:06 |
| 8 | 15.7 | 4:22 | 8:06 |
| 9 | 15.7 | 4:23 | 8:05 |
| 10 | 15.7 | 4:24 | 8:05 |
| 11 | 15.7 | 4:24 | 8:04 |
| 12 | 15.6 | 4:25 | 8:04 |
| 13 | 15.6 | 4:26 | 8:03 |
| 14 | 15.6 | 4:27 | 8:02 |
| 15 | 15.6 | 4:28 | 8:01 |
| 16 | 15.5 | 4:29 | 8:01 |
| 17 | 15.5 | 4:30 | 8:00 |
| 18 | 15.5 | 4:31 | 7:59 |
| 19 | 15.4 | 4:32 | 7:58 |
| 20 | 15.4 | 4:34 | 7:57 |
| 21 | 15.4 | 4:35 | 7:56 |
| 22 | 15.3 | 4:36 | 7:55 |
| 23 | 15.3 | 4:37 | 7:54 |
| 24 | 15.2 | 4:38 | 7:53 |
| 25 | 15.2 | 4:39 | 7:52 |
| 26 | 15.2 | 4:41 | 7:50 |
| 27 | 15.1 | 4:42 | 7:49 |
| 28 | 15.1 | 4:43 | 7:48 |
| 29 | 15.0 | 4:44 | 7:47 |
| 30 | 15.0 | 4:46 | 7:45 |
| 31 | 15.0 | 4:47 | 7:44 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.27 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 0.85 kWh/m² to a high of 6.27 kWh/m² in July across the year — July's 6.27 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.1 | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.1 | Intense |
| 2 | 6.1 | Intense |
| 3 | 6.1 | Intense |
| 4 | 6.1 | Intense |
| 5 | 6.2 | Intense |
| 6 | 6.2 | Intense |
| 7 | 6.2 | Intense |
| 8 | 6.2 | Intense |
| 9 | 6.2 | Intense |
| 10 | 6.2 | Intense |
| 11 | 6.2 | Intense |
| 12 | 6.2 | Intense |
| 13 | 6.2 | Intense |
| 14 | 6.3 | Intense |
| 15 | 6.3 | Intense |
| 16 | 6.3 | Intense |
| 17 | 6.3 | Intense |
| 18 | 6.3 | Intense |
| 19 | 6.3 | Intense |
| 20 | 6.3 | Intense |
| 21 | 6.3 | Intense |
| 22 | 6.3 | Intense |
| 23 | 6.3 | Intense |
| 24 | 6.3 | Intense |
| 25 | 6.3 | Intense |
| 26 | 6.3 | Intense |
| 27 | 6.3 | Intense |
| 28 | 6.3 | Intense |
| 29 | 6.3 | Intense |
| 30 | 6.2 | Intense |
| 31 | 6.2 | Intense |
Hazard calendar for Mount Vernon
None of Mount Vernon's seasonal hazards are active in July. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Mount Vernon's rainy season runs October–April, when most of the year's rain falls.
Is July a good time to visit Mount Vernon?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is one of the better times to visit Mount Vernon for general sightseeing.
What to pack for Mount Vernon in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Mount Vernon sees daytime highs around 70°F and nights near 55°F. Pack sun protection. About 6 days see rain.
Sea temperature near Mount Vernon in July
The nearest coast averages about 53°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 25 mi away) is warmest in August at about 54°F and coldest in February near 46°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 46 | 46 | 47 | 48 | 50 | 52 | 53 | 54 | 53 | 50 | 49 | 47 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 46 | Bracing |
| Feb | 46 | Bracing |
| Mar | 47 | Bracing |
| Apr | 48 | Bracing |
| May | 50 | Bracing |
| Jun | 52 | Bracing |
| Jul | 53 | Bracing |
| Aug | 54 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index in Mount Vernon in July
Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mount Vernon peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 4 | 5 | 7 | 6 | 8 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Mount Vernon in July
Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.
Air quality in Mount Vernon is worst in September — around 18 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (December, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 7 | 9 | 12 | 12 | 12 | 11 | 11 | 18 | 18 | 12 | 7 | 6 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 9 | Good |
| Mar | 12 | Good |
| Apr | 12 | Good |
| May | 12 | Good |
| Jun | 11 | Good |
| Jul | 11 | Good |
| Aug | 18 | Moderate |
| Sep | 18 | Moderate |
| Oct | 12 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Mount Vernon?
Mount Vernon sits at 48.4°N, 122.3°W, 95 ft above sea level, in United States. The nearest listed city is Anacortes, 14 mi away.
Topography around Mount Vernon
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mount Vernon.
Within 2 miles, the terrain around Mount Vernon has significant variations in elevation — a maximum elevation change of 938 ft around an average of 89 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,045 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,755 ft.
The land around Mount Vernon is covered by trees (29%), grassland (28%) and artificial surfaces (27%) within 2 miles, trees (41%) and grassland (25%) within 10 miles, and trees (57%) and water (29%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mount Vernon (48.4212°, -122.3341°, elevation 95 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).