Historical Weather Records & Monthly Climate for Downers Grove, IL
All-Time High
99°F
All-Time Low
-29°F
Max Daily Snow
9.1"
Max Wind Gust
68 mph
Monthly Climate Averages
Based on 30 years of historical data (1994 - 2023)
| Month | High (°F) | Low (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|
| January | 31° | 17° | 2.19" | 7.63" |
| February | 35° | 19° | 2.15" | 6.44" |
| March | 46° | 29° | 2.67" | 3.73" |
| April | 58° | 40° | 4.13" | 1.46" |
| May | 68° | 51° | 4.76" | 0 |
| June | 78° | 61° | 4.35" | 0 |
| July | 82° | 66° | 3.94" | 0 |
| August | 80° | 65° | 3.96" | 0 |
| September | 74° | 58° | 3.02" | 0 |
| October | 61° | 47° | 3.44" | 0.25" |
| November | 48° | 34° | 2.32" | 1.68" |
| December | 36° | 24° | 2.25" | 5.29" |
Historical Weather Extremes
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
10.25"
July 1992
Most rainfall in one month
⛄
Snowiest Month
20.64"
December 1978
Most snowfall in one month
More Historical Climate Data for Cities in
IL