Wilmette weather in January
In January, Wilmette sees average daytime highs of 31°F and overnight lows near 20°F, with 2.3 in of precipitation across 9.1 wet days and about 9.3 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.
Day-to-day highs hold fairly steady near 31°F through the month. The sky is clear or mostly clear about 19% of the time in January, and the air most often feels dry.
Daylight stretches from about 9 hours at the start of January to 9 h 42 min by month's end. Set against the rest of the year, January is Wilmette's 12th-clearest and 2nd-windiest month. For the whole year in context, see Wilmette's year-round climate.
- Daytime high
- 31°
- 12th warmest
- Overnight low
- 20°
- 1st coldest
- Precipitation
- 2.3 in
- 9.1 wet days
- Daylight
- 9 h 18 min
- 7:23 AM – 4:38 PM
- Cloud cover
- 73%
- 12th clearest
- Wind
- 11 mph
- 2nd windiest
- Solar energy
- 1.88 kWh/m²
- Travel score
- 0.0
- out of 10
Wilmette is village in Cook County, Illinois, United States.
- Density
- 1,956/km²
- people per km²
- Founded
- 1872
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 31°F through the month.
A typical January day in Wilmette reaches about 31°F in the afternoon and slips back to 20°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 17°F and 43°F. Set against its neighbours, January runs about 5°F cooler than December and about 3°F cooler than February.
| 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) | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 |
| Avg low (°F) | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 33 | 23 |
| 2 | 33 | 23 |
| 3 | 33 | 22 |
| 4 | 33 | 22 |
| 5 | 33 | 22 |
| 6 | 32 | 22 |
| 7 | 32 | 21 |
| 8 | 32 | 21 |
| 9 | 32 | 21 |
| 10 | 31 | 21 |
| 11 | 31 | 20 |
| 12 | 31 | 20 |
| 13 | 31 | 20 |
| 14 | 31 | 20 |
| 15 | 31 | 19 |
| 16 | 31 | 19 |
| 17 | 30 | 19 |
| 18 | 30 | 19 |
| 19 | 30 | 19 |
| 20 | 30 | 19 |
| 21 | 30 | 19 |
| 22 | 30 | 19 |
| 23 | 30 | 19 |
| 24 | 30 | 19 |
| 25 | 30 | 19 |
| 26 | 30 | 19 |
| 27 | 30 | 19 |
| 28 | 30 | 19 |
| 29 | 31 | 19 |
| 30 | 31 | 19 |
| 31 | 31 | 19 |
How January really feels in Wilmette
Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in January is cold — wind chill drags the overnight "feels like" below the raw low.
Wilmette weather by month
How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 31° / 20° | 2.3 | 9.1 | 6.3 | 9.3 | 0.0 |
| Feb | 34° / 22° | 2.0 | 7.2 | 5 | 10.3 | 0.0 |
| Mar | 43° / 30° | 2.6 | 10 | 3.1 | 11.7 | 0.6 |
| Apr | 54° / 40° | 4.2 | 11.9 | 1.1 | 13.1 | 3.0 |
| May | 65° / 51° | 4.1 | 12 | 0 | 14.4 | 5.5 |
| Jun | 76° / 63° | 3.6 | 11.9 | 0 | 15 | 6.4 |
| Jul | 81° / 68° | 3.4 | 11.3 | 0 | 14.7 | 6.3 |
| Aug | 79° / 67° | 3.6 | 10.7 | 0 | 13.7 | 6.7 |
| Sep | 73° / 59° | 2.9 | 8.9 | 0 | 12.3 | 7.0 |
| Oct | 60° / 47° | 3.3 | 9.4 | 0.1 | 10.8 | 5.0 |
| Nov | 47° / 36° | 2.6 | 8.8 | 1.2 | 9.6 | 1.5 |
| Dec | 36° / 26° | 2.3 | 8.8 | 4.4 | 9 | 0.0 |
Cloud cover in January
The sky is clear or mostly clear about 19% of the time in January, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 70%.
| 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 (%) | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 31 | 31 | 31 | 31 | 32 | 33 | 33 |
| Cloudier (%) | 71 | 71 | 72 | 72 | 72 | 73 | 73 | 74 | 72 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 70 | 69 | 69 | 69 | 69 | 69 | 69 | 70 | 69 | 69 | 69 | 69 | 68 | 67 | 67 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 29 | 71 |
| 2 | 29 | 71 |
| 3 | 28 | 72 |
| 4 | 28 | 72 |
| 5 | 28 | 72 |
| 6 | 27 | 73 |
| 7 | 27 | 73 |
| 8 | 26 | 74 |
| 9 | 28 | 72 |
| 10 | 28 | 72 |
| 11 | 28 | 72 |
| 12 | 28 | 72 |
| 13 | 28 | 72 |
| 14 | 29 | 71 |
| 15 | 29 | 71 |
| 16 | 29 | 71 |
| 17 | 30 | 70 |
| 18 | 31 | 69 |
| 19 | 31 | 69 |
| 20 | 31 | 69 |
| 21 | 31 | 69 |
| 22 | 31 | 69 |
| 23 | 31 | 69 |
| 24 | 30 | 70 |
| 25 | 31 | 69 |
| 26 | 31 | 69 |
| 27 | 31 | 69 |
| 28 | 31 | 69 |
| 29 | 32 | 68 |
| 30 | 33 | 67 |
| 31 | 33 | 67 |
Chance of precipitation in January
Wilmette gets around 2.3 in of rain and snow over 9.1 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 29% and peaks near 32% on the wettest days, and about 6 days bring 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 (%) | 29 | 30 | 30 | 31 | 31 | 31 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 24 |
| Snow chance (%) | 16 | 17 | 17 | 18 | 18 | 19 | 19 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 29 | 16 |
| 2 | 30 | 17 |
| 3 | 30 | 17 |
| 4 | 31 | 18 |
| 5 | 31 | 18 |
| 6 | 31 | 19 |
| 7 | 32 | 19 |
| 8 | 32 | 20 |
| 9 | 32 | 20 |
| 10 | 31 | 20 |
| 11 | 31 | 20 |
| 12 | 31 | 21 |
| 13 | 31 | 21 |
| 14 | 31 | 21 |
| 15 | 30 | 21 |
| 16 | 30 | 21 |
| 17 | 30 | 21 |
| 18 | 29 | 21 |
| 19 | 29 | 21 |
| 20 | 28 | 21 |
| 21 | 28 | 21 |
| 22 | 27 | 21 |
| 23 | 27 | 21 |
| 24 | 26 | 21 |
| 25 | 26 | 21 |
| 26 | 26 | 21 |
| 27 | 26 | 21 |
| 28 | 25 | 20 |
| 29 | 25 | 20 |
| 30 | 25 | 20 |
| 31 | 24 | 20 |
Humidity in January
Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January 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 January
Winds average 11 mph in January.
Across January, daily wind ranges from about 11 mph on the calmest days to 11 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| 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 | 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 |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 11 | light breeze |
| 2 | 11 | light breeze |
| 3 | 11 | light breeze |
| 4 | 11 | light breeze |
| 5 | 11 | light breeze |
| 6 | 11 | light breeze |
| 7 | 11 | light breeze |
| 8 | 11 | light breeze |
| 9 | 11 | light breeze |
| 10 | 11 | light breeze |
| 11 | 11 | light breeze |
| 12 | 11 | light breeze |
| 13 | 11 | light breeze |
| 14 | 11 | light breeze |
| 15 | 11 | light breeze |
| 16 | 11 | light breeze |
| 17 | 11 | light breeze |
| 18 | 11 | light breeze |
| 19 | 11 | light breeze |
| 20 | 11 | light breeze |
| 21 | 11 | light breeze |
| 22 | 11 | light breeze |
| 23 | 11 | light breeze |
| 24 | 11 | light breeze |
| 25 | 11 | light breeze |
| 26 | 11 | light breeze |
| 27 | 11 | light breeze |
| 28 | 11 | light breeze |
| 29 | 11 | light breeze |
| 30 | 11 | light breeze |
| 31 | 11 | light breeze |
Sunrise & sunset in January
Daylight runs from about 9 hours at the start of January to 9 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over January. Sunrise moves from 7:25 AM to 7:13 AM, and sunset from 4:23 PM to 4:56 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) | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.1 | 9.1 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.4 | 9.4 | 9.5 | 9.5 | 9.5 | 9.6 | 9.6 | 9.6 | 9.7 | 9.7 |
| Sunrise (AM) | 7:25 | 7:25 | 7:25 | 7:25 | 7:25 | 7:25 | 7:25 | 7:25 | 7:25 | 7:24 | 7:24 | 7:24 | 7:24 | 7:23 | 7:23 | 7:23 | 7:22 | 7:22 | 7:21 | 7:21 | 7:20 | 7:20 | 7:19 | 7:18 | 7:18 | 7:17 | 7:16 | 7:15 | 7:15 | 7:14 | 7:13 |
| Sunset (PM) | 4:23 | 4:24 | 4:25 | 4:26 | 4:27 | 4:28 | 4:29 | 4:30 | 4:30 | 4:31 | 4:32 | 4:33 | 4:35 | 4:36 | 4:37 | 4:38 | 4:39 | 4:40 | 4:41 | 4:42 | 4:43 | 4:45 | 4:46 | 4:47 | 4:48 | 4:49 | 4:51 | 4:52 | 4:53 | 4:54 | 4:56 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.0 | 7:25 | 4:23 |
| 2 | 9.0 | 7:25 | 4:24 |
| 3 | 9.0 | 7:25 | 4:25 |
| 4 | 9.0 | 7:25 | 4:26 |
| 5 | 9.0 | 7:25 | 4:27 |
| 6 | 9.0 | 7:25 | 4:28 |
| 7 | 9.1 | 7:25 | 4:29 |
| 8 | 9.1 | 7:25 | 4:30 |
| 9 | 9.1 | 7:25 | 4:30 |
| 10 | 9.1 | 7:24 | 4:31 |
| 11 | 9.1 | 7:24 | 4:32 |
| 12 | 9.2 | 7:24 | 4:33 |
| 13 | 9.2 | 7:24 | 4:35 |
| 14 | 9.2 | 7:23 | 4:36 |
| 15 | 9.2 | 7:23 | 4:37 |
| 16 | 9.3 | 7:23 | 4:38 |
| 17 | 9.3 | 7:22 | 4:39 |
| 18 | 9.3 | 7:22 | 4:40 |
| 19 | 9.3 | 7:21 | 4:41 |
| 20 | 9.4 | 7:21 | 4:42 |
| 21 | 9.4 | 7:20 | 4:43 |
| 22 | 9.4 | 7:20 | 4:45 |
| 23 | 9.4 | 7:19 | 4:46 |
| 24 | 9.5 | 7:18 | 4:47 |
| 25 | 9.5 | 7:18 | 4:48 |
| 26 | 9.5 | 7:17 | 4:49 |
| 27 | 9.6 | 7:16 | 4:51 |
| 28 | 9.6 | 7:15 | 4:52 |
| 29 | 9.6 | 7:15 | 4:53 |
| 30 | 9.7 | 7:14 | 4:54 |
| 31 | 9.7 | 7:13 | 4:56 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 1.88 kWh/m².
For context, solar energy here swings from a low near 1.57 kWh/m² to a high of 6.57 kWh/m² in June across the year — January's 1.88 kWh/m² sits near the bottom.
| 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) | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.8 | 1.8 | 1.8 | 1.8 | 1.9 | 1.9 | 1.9 | 2.0 | 2.0 | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 | 2.2 | 2.2 | 2.3 | 2.3 | 2.3 | 2.4 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.6 | Dim |
| 2 | 1.6 | Dim |
| 3 | 1.6 | Dim |
| 4 | 1.6 | Dim |
| 5 | 1.6 | Dim |
| 6 | 1.6 | Dim |
| 7 | 1.7 | Dim |
| 8 | 1.7 | Dim |
| 9 | 1.7 | Dim |
| 10 | 1.7 | Dim |
| 11 | 1.7 | Dim |
| 12 | 1.8 | Dim |
| 13 | 1.8 | Dim |
| 14 | 1.8 | Dim |
| 15 | 1.8 | Dim |
| 16 | 1.9 | Dim |
| 17 | 1.9 | Dim |
| 18 | 1.9 | Dim |
| 19 | 2.0 | Dim |
| 20 | 2.0 | Dim |
| 21 | 2.0 | Moderate |
| 22 | 2.0 | Moderate |
| 23 | 2.1 | Moderate |
| 24 | 2.1 | Moderate |
| 25 | 2.1 | Moderate |
| 26 | 2.2 | Moderate |
| 27 | 2.2 | Moderate |
| 28 | 2.3 | Moderate |
| 29 | 2.3 | Moderate |
| 30 | 2.3 | Moderate |
| 31 | 2.4 | Moderate |
Is January a good time to visit Wilmette?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a weaker month for outdoor sightseeing in Wilmette.
What to pack for Wilmette in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Wilmette sees daytime highs around 31°F and nights near 20°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.
Sea temperature near Wilmette in January
The nearest coast averages about 38°F in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 72°F and coldest in February near 36°F.
It's comfortable for a long swim from Jul 14 to Sep 14 — about 2.1 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 38 | 36 | 36 | 39 | 44 | 56 | 69 | 72 | 68 | 58 | 48 | 42 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Refreshing | Refreshing | Refreshing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 38 | Bracing |
| Feb | 36 | Bracing |
| Mar | 36 | Bracing |
| Apr | 39 | Bracing |
| May | 44 | Bracing |
| Jun | 56 | Bracing |
| Jul | 69 | Refreshing |
| Aug | 72 | Refreshing |
| Sep | 68 | Refreshing |
| Oct | 58 | Bracing |
| Nov | 48 | Bracing |
| Dec | 42 | Bracing |
UV index in Wilmette in January
Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Wilmette peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 | 2 | 4 | 6 | 7 | 9 | 9 | 7 | 6 | 3 | 2 | 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 | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | Very high |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Wilmette in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Wilmette is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 10 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) | 12 | 15 | 18 | 19 | 20 | 21 | 21 | 18 | 15 | 10 | 10 | 11 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Moderate |
| Feb | 15 | Moderate |
| Mar | 18 | Moderate |
| Apr | 19 | Moderate |
| May | 20 | Moderate |
| Jun | 21 | Moderate |
| Jul | 21 | Moderate |
| Aug | 18 | Moderate |
| Sep | 15 | Moderate |
| Oct | 10 | Good |
| Nov | 10 | Good |
| Dec | 11 | Good |
Where is Wilmette?
Wilmette sits at 42.1°N, 87.7°W, 636 ft above sea level, in United States. The nearest listed city is Evanston, 2.5 mi away.
Topography around Wilmette
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Wilmette.
Within 2 miles, the terrain around Wilmette has only modest variations in elevation — a maximum elevation change of 121 ft around an average of 627 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 177 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 784 ft.
The land around Wilmette is covered by trees (58%) and artificial surfaces (28%) within 2 miles, water (44%), artificial surfaces (29%) and trees (20%) within 10 miles, and water (43%) 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 Wilmette (42.0722°, -87.7228°, elevation 636 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).