Annual mean 8°C · wettest around May · prevailing wind W
Warmest
29.4 °C
Coldest
-2.3 °C
Wettest
27%
Windiest
6.2 m/s
Prevailing
W
5.0 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Evanston over the whole year is 8°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -7°C. Evanston has no sharply defined rainy season: the chance of rain on a given day runs from 9% in July, the driest month, to 23% in May, the wettest. Winds in Evanston are highest in February, averaging 4.4 m/s (16 km/h), and lightest in August, at 3.6 m/s (13 km/h). The prevailing wind is from the W. The clearest skies in Evanston come in July, when the sky is typically 14% covered; January is the cloudiest month, at 48%.
Month by month Evanston climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-2°C
-7°C
-8°C
13%
48%
3.7 m/s
0
0
1
February
-0°C
-6°C
-7°C
12%
46%
4.4 m/s
0
0
3
March
5°C
-2°C
-1°C
18%
45%
4.0 m/s
1
0
15
April
10°C
2°C
4°C
20%
40%
4.3 m/s
7
0
35
May
16°C
7°C
10°C
23%
36%
4.1 m/s
29
1
61
June
24°C
13°C
18°C
13%
17%
4.0 m/s
64
16
65
July
29°C
17°C
24°C
9%
14%
3.8 m/s
70
44
41
August
27°C
15°C
22°C
13%
16%
3.6 m/s
74
34
51
September
22°C
10°C
16°C
18%
19%
3.6 m/s
60
12
68
October
13°C
3°C
7°C
14%
26%
3.7 m/s
21
0
53
November
6°C
-2°C
0°C
10%
34%
3.6 m/s
1
0
19
December
-0°C
-5°C
-6°C
12%
47%
3.7 m/s
0
0
2
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Evanston weather by season
Year round, Evanston has days of about -2°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from -7°C to 17°C through the year, and the average temperature over the year is 8°C around the clock. Rain is most likely around May and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Evanston weather in winterDecember to February
High -1°CLow -6°CRain 13%
Winter in Evanston has typical daily highs of about -1°C and lows of about -6°C, with a 13% chance of rain on a given day.
Evanston weather in springMarch to May
High 10°CLow 2°CRain 20%
Spring in Evanston has typical daily highs of about 10°C and lows of about 2°C, with a 20% chance of rain on a given day.
Evanston weather in summerJune to August
High 27°CLow 15°CRain 12%
Summer in Evanston has typical daily highs of about 27°C and lows of about 15°C, with a 12% chance of rain on a given day.
Evanston weather in autumnSeptember to November
High 14°CLow 4°CRain 14%
Autumn in Evanston has typical daily highs of about 14°C and lows of about 4°C, with a 14% chance of rain on a given day.
When is the rainy season in Evanston?
Evanston has no sharply defined rainy season: the chance of rain on a given day runs from 9% in July, the driest month, to 23% in May, the wettest.
What time of year is Evanston windiest?
Winds in Evanston are highest in February, averaging 4.4 m/s (16 km/h), and lightest in August, at 3.6 m/s (13 km/h). The prevailing wind is from the W.
What is the average temperature in Evanston year round?
The average temperature in Evanston over the whole year is 8°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -7°C.