Historical Weather Records & Monthly Climate for Wheaton, IL

All-Time High
100°F
All-Time Low
-29°F
Max Daily Snow
16"
Max Daily Rain
5.27"
Max Snow Depth
8"

Monthly Climate Averages for Wheaton, IL

Based on 30 years of historical data (1994 - 2023)

MonthHigh (°F)Low (°F)Precip (in)Snow (in)
January30°16°2.16"7.64"
February34°18°2.11"6.35"
March46°29°2.6"3.71"
April58°39°4.08"1.54"
May69°50°4.73"0
June79°61°4.28"0
July82°66°3.88"0
August81°65°3.94"0
September74°58°3.03"0
October61°46°3.39"0.22"
November47°34°2.28"1.66"
December36°23°2.26"5.36"

Historical Weather Extremes for Wheaton, IL

Based on 80+ years of archive data (1940 - 2024)

🔥
Longest Heatwave
10 Days
1953
Consecutive days ≥ 90°F
🧊
Deepest Freeze
43 Days
1977
Consecutive days ≤ 32°F
🏜️
Longest Drought
24 Days
1999
Consecutive days w/o rain
Wettest Month
9.03"
April 2013
Most rainfall in one month
Snowiest Month
20.1"
February 2011
Most snowfall in one month

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