Weather in Chicago in October
In an average October, Chicago sees a daily high around 63°F and a low around 45°F, based on 1980–2026 of local climate records.
| Average high | 63°F |
|---|---|
| Typical high range | 51°F to 76°F |
| Average low | 45°F |
| Typical low range | 34°F to 56°F |
| Average daily precipitation | 0.10 in |
October records
The most extreme October on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total October accumulation.
High
Highest
88°F
2007-10-07
Lowest
35°F
2023-10-31
Low
Highest
72°F
2019-10-01
Lowest
20°F
1981-10-24
Feels-like
Highest
103°F
2018-10-03
Lowest
7°F
1981-10-24
Humidity
Highest
17.5 g/m³
2005-10-03
Lowest
2.5 g/m³
1996-10-31
Wind
Highest
28 mph
1996-10-30
Lowest
4 mph
2016-10-03
Gust
Highest
55 mph
1996-10-30
Lowest
8 mph
1982-10-25
Precip
Wettest
7.34 in
2019
Driest
0.78 in
2005
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