Martha Lake weather in March
In March, Martha Lake sees average daytime highs of 51°F and overnight lows near 41°F, with 5.5 in of precipitation across 17.8 wet days and about 11.6 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.
Highs climb over the month, from about 49°F in the first days to 53°F by the end. The sky is clear or mostly clear about 15% of the time in March, and the air most often feels dry.
Daylight stretches from about 10 h 42 min at the start of March to 12 h 30 min by month's end. Set against the rest of the year, March is Martha Lake's 9th-clearest and 4th-windiest month. For the whole year in context, see Martha Lake's year-round climate.
- Daytime high
- 51°
- 8th warmest
- Overnight low
- 41°
- 4th coldest
- Precipitation
- 5.5 in
- 17.8 wet days
- Daylight
- 11 h 36 min
- 6:32 AM – 6:06 PM
- Cloud cover
- 72%
- 9th clearest
- Wind
- 7 mph
- 4th windiest
- Solar energy
- 2.93 kWh/m²
- Travel score
- 2.1
- out of 10
Martha Lake is census designated place in Snohomish County, Washington, United States.
- Density
- 1,288/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Highs climb over the month, from about 49°F in the first days to 53°F by the end.
A typical March day in Martha Lake reaches about 51°F in the afternoon and slips back to 41°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 45°F and 58°F. Set against its neighbours, March runs about 4°F warmer than February and about 4°F cooler than April.
| 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) | 49 | 49 | 49 | 50 | 50 | 50 | 50 | 50 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 |
| Avg low (°F) | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 42 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 49 | 39 |
| 2 | 49 | 39 |
| 3 | 49 | 39 |
| 4 | 50 | 40 |
| 5 | 50 | 40 |
| 6 | 50 | 40 |
| 7 | 50 | 40 |
| 8 | 50 | 40 |
| 9 | 51 | 40 |
| 10 | 51 | 40 |
| 11 | 51 | 40 |
| 12 | 51 | 40 |
| 13 | 51 | 41 |
| 14 | 51 | 41 |
| 15 | 51 | 41 |
| 16 | 52 | 41 |
| 17 | 52 | 41 |
| 18 | 52 | 41 |
| 19 | 52 | 41 |
| 20 | 52 | 41 |
| 21 | 52 | 41 |
| 22 | 52 | 41 |
| 23 | 52 | 41 |
| 24 | 53 | 41 |
| 25 | 53 | 41 |
| 26 | 53 | 41 |
| 27 | 53 | 42 |
| 28 | 53 | 42 |
| 29 | 53 | 42 |
| 30 | 53 | 42 |
| 31 | 53 | 42 |
Martha Lake weather by month
How March compares with the rest of the year at a glance. March is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 46° / 39° | 7.1 | 18.3 | 2.1 | 8.6 | 0.9 |
| Feb | 48° / 39° | 4.7 | 14.9 | 1.8 | 9.9 | 1.5 |
| Mar | 51° / 41° | 5.5 | 17.8 | 0.8 | 11.6 | 2.1 |
| Apr | 56° / 44° | 4.4 | 15.4 | 0.1 | 13.4 | 3.2 |
| May | 62° / 48° | 3.1 | 12.5 | 0 | 14.9 | 4.9 |
| Jun | 66° / 52° | 2.8 | 10.7 | 0 | 15.7 | 5.9 |
| Jul | 71° / 56° | 1.3 | 6 | 0 | 15.4 | 7.6 |
| Aug | 72° / 56° | 1.5 | 5.2 | 0 | 14.1 | 7.7 |
| Sep | 66° / 53° | 2.8 | 8.7 | 0 | 12.4 | 6.5 |
| Oct | 58° / 47° | 5.6 | 14.6 | 0 | 10.6 | 3.8 |
| Nov | 50° / 42° | 7.8 | 18.1 | 0.6 | 9.1 | 1.7 |
| Dec | 45° / 38° | 7.1 | 17.9 | 2.1 | 8.3 | 0.8 |
Cloud cover in March
The sky is clear or mostly clear about 15% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 13% of March, with mostly cloudy or overcast conditions the remaining 71%.
| 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 (%) | 31 | 31 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 27 | 27 | 27 |
| Cloudier (%) | 69 | 69 | 70 | 70 | 71 | 71 | 72 | 72 | 72 | 72 | 72 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 71 | 70 | 71 | 71 | 73 | 73 | 73 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 31 | 69 |
| 2 | 31 | 69 |
| 3 | 30 | 70 |
| 4 | 30 | 70 |
| 5 | 29 | 71 |
| 6 | 29 | 71 |
| 7 | 28 | 72 |
| 8 | 28 | 72 |
| 9 | 28 | 72 |
| 10 | 28 | 72 |
| 11 | 28 | 72 |
| 12 | 27 | 73 |
| 13 | 27 | 73 |
| 14 | 27 | 73 |
| 15 | 27 | 73 |
| 16 | 28 | 72 |
| 17 | 28 | 72 |
| 18 | 28 | 72 |
| 19 | 28 | 72 |
| 20 | 29 | 71 |
| 21 | 29 | 71 |
| 22 | 29 | 71 |
| 23 | 29 | 71 |
| 24 | 29 | 71 |
| 25 | 29 | 71 |
| 26 | 30 | 70 |
| 27 | 29 | 71 |
| 28 | 29 | 71 |
| 29 | 27 | 73 |
| 30 | 27 | 73 |
| 31 | 27 | 73 |
Chance of precipitation in March
Martha Lake gets around 5.5 in of rain and snow over 17.8 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 57% and peaks near 58% on the wettest days, and about 1 day brings snow.
| 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 (%) | 55 | 55 | 55 | 56 | 56 | 57 | 57 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 57 | 57 | 57 | 57 | 56 | 56 | 55 | 55 | 55 | 55 | 55 | 54 |
| Snow chance (%) | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 55 | 5 |
| 2 | 55 | 5 |
| 3 | 55 | 5 |
| 4 | 56 | 5 |
| 5 | 56 | 4 |
| 6 | 57 | 4 |
| 7 | 57 | 4 |
| 8 | 58 | 4 |
| 9 | 58 | 4 |
| 10 | 58 | 4 |
| 11 | 58 | 4 |
| 12 | 58 | 4 |
| 13 | 58 | 3 |
| 14 | 58 | 3 |
| 15 | 58 | 3 |
| 16 | 58 | 3 |
| 17 | 58 | 3 |
| 18 | 58 | 3 |
| 19 | 58 | 3 |
| 20 | 57 | 2 |
| 21 | 57 | 2 |
| 22 | 57 | 2 |
| 23 | 57 | 2 |
| 24 | 56 | 2 |
| 25 | 56 | 2 |
| 26 | 55 | 2 |
| 27 | 55 | 2 |
| 28 | 55 | 1 |
| 29 | 55 | 1 |
| 30 | 55 | 1 |
| 31 | 54 | 1 |
Humidity in March
Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the dry band about 100% 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 (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in March
Winds average 7 mph in March.
Across March, daily wind ranges from about 6 mph on the calmest days to 7 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) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 |
| 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 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in March
Daylight runs from about 10 h 42 min at the start of March to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 108 minutes over March. Sunrise moves from 7:01 AM to 6:00 AM, and sunset from 5:43 PM to 6:28 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) | 10.7 | 10.8 | 10.8 | 10.9 | 10.9 | 11.0 | 11.0 | 11.1 | 11.2 | 11.2 | 11.3 | 11.3 | 11.4 | 11.5 | 11.5 | 11.6 | 11.6 | 11.7 | 11.7 | 11.8 | 11.9 | 11.9 | 12.0 | 12.0 | 12.1 | 12.2 | 12.2 | 12.3 | 12.3 | 12.4 | 12.5 |
| Sunrise (AM) | 7:01 | 6:59 | 6:58 | 6:56 | 6:54 | 6:52 | 6:50 | 6:48 | 6:46 | 6:44 | 6:42 | 6:40 | 6:38 | 6:36 | 6:34 | 6:32 | 6:29 | 6:27 | 6:25 | 6:23 | 6:21 | 6:19 | 6:17 | 6:15 | 6:13 | 6:11 | 6:09 | 6:06 | 6:04 | 6:02 | 6:00 |
| Sunset (PM) | 5:43 | 5:45 | 5:46 | 5:48 | 5:49 | 5:51 | 5:52 | 5:54 | 5:55 | 5:57 | 5:58 | 6:00 | 6:01 | 6:03 | 6:04 | 6:06 | 6:07 | 6:09 | 6:10 | 6:12 | 6:13 | 6:15 | 6:16 | 6:18 | 6:19 | 6:20 | 6:22 | 6:23 | 6:25 | 6:26 | 6:28 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.7 | 7:01 | 5:43 |
| 2 | 10.8 | 6:59 | 5:45 |
| 3 | 10.8 | 6:58 | 5:46 |
| 4 | 10.9 | 6:56 | 5:48 |
| 5 | 10.9 | 6:54 | 5:49 |
| 6 | 11.0 | 6:52 | 5:51 |
| 7 | 11.0 | 6:50 | 5:52 |
| 8 | 11.1 | 6:48 | 5:54 |
| 9 | 11.2 | 6:46 | 5:55 |
| 10 | 11.2 | 6:44 | 5:57 |
| 11 | 11.3 | 6:42 | 5:58 |
| 12 | 11.3 | 6:40 | 6:00 |
| 13 | 11.4 | 6:38 | 6:01 |
| 14 | 11.5 | 6:36 | 6:03 |
| 15 | 11.5 | 6:34 | 6:04 |
| 16 | 11.6 | 6:32 | 6:06 |
| 17 | 11.6 | 6:29 | 6:07 |
| 18 | 11.7 | 6:27 | 6:09 |
| 19 | 11.7 | 6:25 | 6:10 |
| 20 | 11.8 | 6:23 | 6:12 |
| 21 | 11.9 | 6:21 | 6:13 |
| 22 | 11.9 | 6:19 | 6:15 |
| 23 | 12.0 | 6:17 | 6:16 |
| 24 | 12.0 | 6:15 | 6:18 |
| 25 | 12.1 | 6:13 | 6:19 |
| 26 | 12.2 | 6:11 | 6:20 |
| 27 | 12.2 | 6:09 | 6:22 |
| 28 | 12.3 | 6:06 | 6:23 |
| 29 | 12.3 | 6:04 | 6:25 |
| 30 | 12.4 | 6:02 | 6:26 |
| 31 | 12.5 | 6:00 | 6:28 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 2.93 kWh/m².
For context, solar energy here swings from a low near 0.86 kWh/m² to a high of 6.07 kWh/m² in July across the year — March's 2.93 kWh/m² falls in the middle.
| 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) | 2.4 | 2.4 | 2.4 | 2.5 | 2.5 | 2.5 | 2.6 | 2.6 | 2.6 | 2.7 | 2.7 | 2.7 | 2.8 | 2.8 | 2.9 | 2.9 | 3.0 | 3.0 | 3.1 | 3.1 | 3.2 | 3.2 | 3.3 | 3.3 | 3.4 | 3.4 | 3.4 | 3.5 | 3.5 | 3.6 | 3.6 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.4 | Moderate |
| 2 | 2.4 | Moderate |
| 3 | 2.4 | Moderate |
| 4 | 2.5 | Moderate |
| 5 | 2.5 | Moderate |
| 6 | 2.5 | Moderate |
| 7 | 2.6 | Moderate |
| 8 | 2.6 | Moderate |
| 9 | 2.6 | Moderate |
| 10 | 2.7 | Moderate |
| 11 | 2.7 | Moderate |
| 12 | 2.7 | Moderate |
| 13 | 2.8 | Moderate |
| 14 | 2.8 | Moderate |
| 15 | 2.9 | Moderate |
| 16 | 2.9 | Moderate |
| 17 | 3.0 | Moderate |
| 18 | 3.0 | Moderate |
| 19 | 3.1 | Moderate |
| 20 | 3.1 | Moderate |
| 21 | 3.2 | Moderate |
| 22 | 3.2 | Moderate |
| 23 | 3.3 | Moderate |
| 24 | 3.3 | Moderate |
| 25 | 3.4 | Moderate |
| 26 | 3.4 | Moderate |
| 27 | 3.4 | Moderate |
| 28 | 3.5 | Moderate |
| 29 | 3.5 | Moderate |
| 30 | 3.6 | Moderate |
| 31 | 3.6 | Moderate |
Hazard calendar for Martha Lake
In March, Martha Lake sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Martha Lake's rainy season runs October–April, when most of the year's rain falls.
Is March a good time to visit Martha Lake?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a weaker month for outdoor sightseeing in Martha Lake.
What to pack for Martha Lake in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Martha Lake sees daytime highs around 51°F and nights near 41°F. Pack a warm layer and rain gear. About 18 days see rain.
Sea temperature near Martha Lake in March
The nearest coast averages about 47°F in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 35 mi away) is warmest in August at about 53°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 | 53 | 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 | 53 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index in Martha Lake in March
Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Martha Lake 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 Martha Lake in March
Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.
Air quality in Martha Lake is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× 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) | 8 | 10 | 12 | 12 | 13 | 11 | 10 | 20 | 18 | 11 | 7 | 6 |
| Level | Good | Good | Moderate | Good | Moderate | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 10 | Good |
| Mar | 12 | Moderate |
| Apr | 12 | Good |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 20 | Moderate |
| Sep | 18 | Moderate |
| Oct | 11 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Martha Lake?
Martha Lake sits at 47.9°N, 122.2°W, 469 ft above sea level, in United States. The nearest listed city is Mill Creek, 1.9 mi away.
Topography around Martha Lake
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Martha Lake.
Within 2 miles, the terrain around Martha Lake has only modest variations in elevation — a maximum elevation change of 413 ft around an average of 430 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 771 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,589 ft.
The land around Martha Lake is covered by trees (66%) and artificial surfaces (29%) within 2 miles, trees (50%) and water (22%) within 10 miles, and trees (69%) 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 Martha Lake (47.8509°, -122.2393°, elevation 469 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).