Historical Weather Records & Monthly Climate for Arlington Heights, IL

All-Time High
104°F
All-Time Low
-21°F
Max Daily Snow
9.8"
Max Daily Rain
4.53"
Max Snow Depth
0

Monthly Climate Averages for Arlington Heights, IL

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

MonthHigh (°F)Low (°F)Precip (in)Snow (in)
January30°17°2.09"8.13"
February34°19°2.12"6.95"
March45°29°2.53"3.91"
April56°39°3.99"1.79"
May67°51°4.49"0.01"
June78°62°4.01"0
July82°67°3.68"0
August80°66°3.76"0
September74°59°2.91"0
October61°47°3.3"0.2"
November47°35°2.2"1.8"
December36°24°2.24"6.13"

Historical Weather Extremes for Arlington Heights, 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
26 Days
1944
Consecutive days w/o rain
Wettest Month
9.91"
August 2007
Most rainfall in one month
Snowiest Month
20.84"
January 1979
Most snowfall in one month

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