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Climate Statistics · City

Average daily low in Chicago

1991–2020 · 1 data point Updated Oct 21, 2026
Climate · Chicago

Source: NOAA National Centers for Environmental Information — GHCN-Daily, 1991–2020

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Latest value · 1991–2020 44 °F
Weather through the year long-term average 1991–2020 · Chicago Midway Ap 3Sw weather station, 20 km away
32° 19°
Jan
37° 22°
Feb
47° 31°
Mar
60° 41°
Apr
71° 52°
May
81° 62°
Jun
85° 68°
Jul
83° 66°
Aug
76° 59°
Sep
63° 46°
Oct
49° 35°
Nov
37° 25°
Dec
2.3
2.1
2.7
4.1
4.8
4.5
4.0
4.1
3.3
3.9
2.7
2.3
High and low, °F Precipitation, inches

Source: NOAA National Centers for Environmental Information — GHCN-Daily, 1991–2020

What it means

The typical coolest temperature of the day, usually at night, averaged over the year.

How it is calculated

Mean of the twelve monthly normals of the daily minimum at the nearest weather station: 1991–2020, or the latest ten years where the older record is missing.