Sterling weather in June
In June, Sterling sees average daytime highs of 80°F and overnight lows near 62°F, with 4.5 in of rain across 12 wet days and about 15 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.
Highs climb over the month, from about 77°F in the first days to 82°F by the end. The sky is clear or mostly clear about 33% of the time in June, and the air most often feels dry.
Daylight stretches from about 14 h 48 min at the start of June to 15 hours by month's end. Set against the rest of the year, June is Sterling's 5th-clearest and 10th-windiest month. For the whole year in context, see Sterling's year-round climate.
- Daytime high
- 80°
- 3rd warmest
- Overnight low
- 62°
- 10th coldest
- Rainfall
- 4.5 in
- 12 wet days
- Daylight
- 15 hours
- 4:29 AM – 7:30 PM
- Cloud cover
- 58%
- 5th clearest
- Wind
- 7 mph
- 10th windiest
- Solar energy
- 6.34 kWh/m²
- Travel score
- 6.3
- out of 10
Sterling is city in Whiteside County, Illinois, United States.
- Density
- 978/km²
- people per km²
- Founded
- 1838
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in June
Highs climb over the month, from about 77°F in the first days to 82°F by the end.
A typical June day in Sterling reaches about 80°F in the afternoon and slips back to 62°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 89°F. Set against its neighbours, June runs about 9°F warmer than May and about 3°F cooler than July.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 76 | 76 | 77 | 77 | 77 | 78 | 78 | 78 | 79 | 79 | 79 | 80 | 80 | 80 | 80 | 80 | 81 | 81 | 81 | 81 | 81 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 |
| Avg low (°F) | 57 | 58 | 58 | 58 | 59 | 59 | 60 | 60 | 60 | 61 | 61 | 61 | 62 | 62 | 62 | 62 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 65 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 76 | 57 |
| 2 | 76 | 58 |
| 3 | 77 | 58 |
| 4 | 77 | 58 |
| 5 | 77 | 59 |
| 6 | 78 | 59 |
| 7 | 78 | 60 |
| 8 | 78 | 60 |
| 9 | 79 | 60 |
| 10 | 79 | 61 |
| 11 | 79 | 61 |
| 12 | 80 | 61 |
| 13 | 80 | 62 |
| 14 | 80 | 62 |
| 15 | 80 | 62 |
| 16 | 80 | 62 |
| 17 | 81 | 63 |
| 18 | 81 | 63 |
| 19 | 81 | 63 |
| 20 | 81 | 63 |
| 21 | 81 | 64 |
| 22 | 82 | 64 |
| 23 | 82 | 64 |
| 24 | 82 | 64 |
| 25 | 82 | 64 |
| 26 | 82 | 64 |
| 27 | 82 | 64 |
| 28 | 82 | 64 |
| 29 | 82 | 64 |
| 30 | 82 | 65 |
How June really feels in Sterling
Once humidity and wind are folded in, June 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.
June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sterling weather by month
How June compares with the rest of the year at a glance. June is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 30° / 15° | 1.9 | 7.6 | 5.1 | 9.3 | 0.0 |
| Feb | 35° / 19° | 1.9 | 6.7 | 4.2 | 10.3 | 0.0 |
| Mar | 48° / 30° | 2.6 | 9.4 | 2.4 | 11.7 | 1.7 |
| Apr | 60° / 41° | 4.3 | 11.5 | 0.8 | 13.1 | 4.6 |
| May | 71° / 52° | 4.7 | 13.2 | 0 | 14.3 | 6.0 |
| Jun | 80° / 62° | 4.5 | 12 | 0 | 15 | 6.3 |
| Jul | 83° / 65° | 3.7 | 10.1 | 0 | 14.7 | 6.0 |
| Aug | 81° / 63° | 3.3 | 9.1 | 0 | 13.7 | 6.7 |
| Sep | 75° / 55° | 3.4 | 8.3 | 0 | 12.3 | 7.1 |
| Oct | 62° / 43° | 2.9 | 8.5 | 0.2 | 10.9 | 5.5 |
| Nov | 47° / 32° | 2.5 | 7.7 | 1.3 | 9.6 | 1.7 |
| Dec | 35° / 22° | 2.2 | 7.5 | 4 | 9 | 0.0 |
Cloud cover in June
The sky is clear or mostly clear about 33% of the time in June.
Beyond those clear spells, partly cloudy skies cover about 16% of June, with mostly cloudy or overcast conditions the remaining 52%. 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 44 | 44 | 45 | 45 | 45 | 45 | 46 | 45 | 45 | 46 | 45 | 45 | 45 | 45 | 45 | 47 | 47 | 47 | 49 | 49 | 51 | 51 | 52 | 53 | 53 | 55 | 55 | 56 | 56 | 56 |
| Cloudier (%) | 56 | 56 | 55 | 55 | 55 | 55 | 54 | 55 | 55 | 54 | 55 | 55 | 55 | 55 | 55 | 53 | 53 | 53 | 51 | 51 | 49 | 49 | 48 | 47 | 47 | 45 | 45 | 44 | 44 | 44 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 44 | 56 |
| 2 | 44 | 56 |
| 3 | 45 | 55 |
| 4 | 45 | 55 |
| 5 | 45 | 55 |
| 6 | 45 | 55 |
| 7 | 46 | 54 |
| 8 | 45 | 55 |
| 9 | 45 | 55 |
| 10 | 46 | 54 |
| 11 | 45 | 55 |
| 12 | 45 | 55 |
| 13 | 45 | 55 |
| 14 | 45 | 55 |
| 15 | 45 | 55 |
| 16 | 47 | 53 |
| 17 | 47 | 53 |
| 18 | 47 | 53 |
| 19 | 49 | 51 |
| 20 | 49 | 51 |
| 21 | 51 | 49 |
| 22 | 51 | 49 |
| 23 | 52 | 48 |
| 24 | 53 | 47 |
| 25 | 53 | 47 |
| 26 | 55 | 45 |
| 27 | 55 | 45 |
| 28 | 56 | 44 |
| 29 | 56 | 44 |
| 30 | 56 | 44 |
Chance of precipitation in June
Sterling gets around 4.5 in of rain over 12 wet days in June. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 40% and peaks near 42% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 39 | 38 | 38 | 37 | 37 | 36 | 36 | 36 | 35 | 35 | 35 |
| Rain chance (%) | |
|---|---|
| 1 | 42 |
| 2 | 42 |
| 3 | 42 |
| 4 | 42 |
| 5 | 42 |
| 6 | 42 |
| 7 | 42 |
| 8 | 42 |
| 9 | 42 |
| 10 | 41 |
| 11 | 41 |
| 12 | 41 |
| 13 | 41 |
| 14 | 41 |
| 15 | 41 |
| 16 | 41 |
| 17 | 40 |
| 18 | 40 |
| 19 | 40 |
| 20 | 39 |
| 21 | 38 |
| 22 | 38 |
| 23 | 37 |
| 24 | 37 |
| 25 | 36 |
| 26 | 36 |
| 27 | 36 |
| 28 | 35 |
| 29 | 35 |
| 30 | 35 |
Humidity in June
Most of June feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, June lands in the dry band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 50 | 48 | 46 | 45 | 43 | 42 | 40 | 38 | 37 | 35 | 33 | 31 | 29 | 27 | 26 | 24 | 23 | 22 | 20 | 19 | 19 | 18 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 14 |
| Comfortable (%) | 20 | 21 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 19 |
| Humid (%) | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 20 | 20 | 21 | 21 | 22 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Muggy (%) | 13 | 13 | 14 | 14 | 15 | 15 | 16 | 17 | 17 | 18 | 19 | 20 | 21 | 23 | 24 | 24 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Oppressive (%) | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 | 14 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 50 | 20 | 16 | 13 | 1 | 0 |
| 2 | 48 | 21 | 16 | 13 | 1 | 0 |
| 3 | 46 | 22 | 17 | 14 | 1 | 0 |
| 4 | 45 | 22 | 17 | 14 | 1 | 0 |
| 5 | 43 | 23 | 17 | 15 | 2 | 0 |
| 6 | 42 | 23 | 18 | 15 | 2 | 0 |
| 7 | 40 | 23 | 18 | 16 | 2 | 0 |
| 8 | 38 | 24 | 19 | 17 | 3 | 0 |
| 9 | 37 | 24 | 19 | 17 | 3 | 0 |
| 10 | 35 | 24 | 20 | 18 | 3 | 0 |
| 11 | 33 | 24 | 20 | 19 | 4 | 0 |
| 12 | 31 | 24 | 21 | 20 | 4 | 0 |
| 13 | 29 | 24 | 21 | 21 | 5 | 0 |
| 14 | 27 | 23 | 22 | 23 | 5 | 0 |
| 15 | 26 | 23 | 23 | 24 | 5 | 0 |
| 16 | 24 | 23 | 23 | 24 | 6 | 0 |
| 17 | 23 | 22 | 24 | 25 | 6 | 0 |
| 18 | 22 | 22 | 24 | 26 | 7 | 0 |
| 19 | 20 | 21 | 25 | 27 | 7 | 0 |
| 20 | 19 | 21 | 25 | 27 | 7 | 0 |
| 21 | 19 | 21 | 25 | 27 | 8 | 0 |
| 22 | 18 | 21 | 25 | 28 | 8 | 0 |
| 23 | 17 | 21 | 25 | 28 | 9 | 0 |
| 24 | 16 | 21 | 25 | 28 | 9 | 0 |
| 25 | 16 | 20 | 25 | 28 | 10 | 0 |
| 26 | 15 | 20 | 25 | 28 | 11 | 0 |
| 27 | 15 | 20 | 25 | 28 | 12 | 0 |
| 28 | 15 | 19 | 25 | 28 | 12 | 0 |
| 29 | 14 | 19 | 25 | 28 | 13 | 1 |
| 30 | 14 | 19 | 25 | 28 | 14 | 1 |
Wind in June
Winds average 7 mph in June.
Across June, daily wind ranges from about 7 mph on the calmest days to 8 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 8 | light breeze |
| 2 | 8 | light breeze |
| 3 | 8 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 8 | light breeze |
| 12 | 8 | light breeze |
| 13 | 8 | light breeze |
| 14 | 8 | light breeze |
| 15 | 8 | light breeze |
| 16 | 8 | light breeze |
| 17 | 7 | light breeze |
| 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 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
Sunrise & sunset in June
Daylight runs from about 14 h 48 min at the start of June to 15 hours by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over June. Sunrise moves from 4:32 AM to 4:32 AM, and sunset from 7:20 PM to 7:32 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.8 | 14.8 | 14.8 | 14.9 | 14.9 | 14.9 | 14.9 | 14.9 | 14.9 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 |
| Sunrise (AM) | 4:32 | 4:32 | 4:31 | 4:31 | 4:31 | 4:30 | 4:30 | 4:30 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:29 | 4:30 | 4:30 | 4:30 | 4:30 | 4:31 | 4:31 | 4:32 |
| Sunset (PM) | 7:20 | 7:21 | 7:22 | 7:23 | 7:23 | 7:24 | 7:25 | 7:25 | 7:26 | 7:27 | 7:27 | 7:28 | 7:28 | 7:29 | 7:29 | 7:30 | 7:30 | 7:30 | 7:31 | 7:31 | 7:31 | 7:31 | 7:32 | 7:32 | 7:32 | 7:32 | 7:32 | 7:32 | 7:32 | 7:32 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.8 | 4:32 | 7:20 |
| 2 | 14.8 | 4:32 | 7:21 |
| 3 | 14.8 | 4:31 | 7:22 |
| 4 | 14.9 | 4:31 | 7:23 |
| 5 | 14.9 | 4:31 | 7:23 |
| 6 | 14.9 | 4:30 | 7:24 |
| 7 | 14.9 | 4:30 | 7:25 |
| 8 | 14.9 | 4:30 | 7:25 |
| 9 | 14.9 | 4:29 | 7:26 |
| 10 | 15.0 | 4:29 | 7:27 |
| 11 | 15.0 | 4:29 | 7:27 |
| 12 | 15.0 | 4:29 | 7:28 |
| 13 | 15.0 | 4:29 | 7:28 |
| 14 | 15.0 | 4:29 | 7:29 |
| 15 | 15.0 | 4:29 | 7:29 |
| 16 | 15.0 | 4:29 | 7:30 |
| 17 | 15.0 | 4:29 | 7:30 |
| 18 | 15.0 | 4:29 | 7:30 |
| 19 | 15.0 | 4:29 | 7:31 |
| 20 | 15.0 | 4:29 | 7:31 |
| 21 | 15.0 | 4:29 | 7:31 |
| 22 | 15.0 | 4:29 | 7:31 |
| 23 | 15.0 | 4:29 | 7:32 |
| 24 | 15.0 | 4:30 | 7:32 |
| 25 | 15.0 | 4:30 | 7:32 |
| 26 | 15.0 | 4:30 | 7:32 |
| 27 | 15.0 | 4:30 | 7:32 |
| 28 | 15.0 | 4:31 | 7:32 |
| 29 | 15.0 | 4:31 | 7:32 |
| 30 | 15.0 | 4:32 | 7:32 |
Solar energy in June
Average shortwave solar energy reaching the ground each day in June, about 6.34 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 6.34 kWh/m² in June across the year — June's 6.34 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.2 | 6.3 | 6.3 | 6.3 | 6.3 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.0 | Intense |
| 2 | 6.0 | Intense |
| 3 | 6.0 | Intense |
| 4 | 6.1 | Intense |
| 5 | 6.1 | Intense |
| 6 | 6.1 | Intense |
| 7 | 6.1 | Intense |
| 8 | 6.2 | Intense |
| 9 | 6.2 | Intense |
| 10 | 6.2 | Intense |
| 11 | 6.2 | Intense |
| 12 | 6.3 | Intense |
| 13 | 6.3 | Intense |
| 14 | 6.3 | Intense |
| 15 | 6.3 | Intense |
| 16 | 6.4 | Intense |
| 17 | 6.4 | Intense |
| 18 | 6.4 | Intense |
| 19 | 6.4 | Intense |
| 20 | 6.4 | Intense |
| 21 | 6.5 | Intense |
| 22 | 6.5 | Intense |
| 23 | 6.5 | Intense |
| 24 | 6.5 | Intense |
| 25 | 6.5 | Intense |
| 26 | 6.5 | Intense |
| 27 | 6.5 | Intense |
| 28 | 6.5 | Intense |
| 29 | 6.5 | Intense |
| 30 | 6.5 | Intense |
Is June a good time to visit Sterling?
Our two travel scores rate June for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
June is a reasonable time to visit Sterling for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Sterling in June
From June's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In June, Sterling sees daytime highs around 80°F and nights near 62°F. Pack sun protection. Worth having: light clothes and rain gear. About 12 days see rain.
UV index in Sterling in June
Clear-sky midday UV in June peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sterling peaks around June 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Sterling in June
Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.
Air quality in Sterling is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 7 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) | 11 | 13 | 13 | 11 | 13 | 13 | 15 | 14 | 11 | 7 | 8 | 9 |
| Level | Good | Moderate | Moderate | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 13 | Moderate |
| Mar | 13 | Moderate |
| Apr | 11 | Good |
| May | 13 | Moderate |
| Jun | 13 | Moderate |
| Jul | 15 | Moderate |
| Aug | 14 | Moderate |
| Sep | 11 | Good |
| Oct | 7 | Good |
| Nov | 8 | Good |
| Dec | 9 | Good |
Where is Sterling?
Sterling sits at 41.8°N, 89.7°W, 659 ft above sea level, in United States. The nearest listed city is Dixon, 12 mi away.
Topography around Sterling
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sterling.
Within 2 miles, the terrain around Sterling has only modest variations in elevation — a maximum elevation change of 121 ft around an average of 656 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 295 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 830 ft.
The land around Sterling is covered by trees (28%) and artificial surfaces (28%) within 2 miles, cropland (81%) within 10 miles, and cropland (77%) 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 Sterling (41.7886°, -89.6962°, elevation 659 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. 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).