As of 11:43 CDT

Chicago, IL weather in October

85°

Chicago, Sunday, 9 August, 11:43

Mostly clear. Feels like 93°. High 86°, low 63°.

Pressure30.00 inHg

Wind5 mph SW

Humidity73%

Visibility6.2 mi

Dew point75°

See detailed hourly forecast

In October, Chicago, IL averages a high of 61.2° and a low of 48.6°. About 3.3 inches of precipitation fall over the month (10 wet days). The record high is 86.9° (2025) and the record low 27.1° (1962). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	68.7°	54.9°	20%	85.5° (2019)	41.5° (2003)
2	68.2°	54.7°	32%	83.3° (1971)	38.5° (2003)
3	67.3°	54.3°	42%	86.9° (2025)	35.1° (1974)
4	66.2°	53.2°	33%	85.5° (2025)	39.7° (2014)
5	66.2°	52.5°	27%	84° (2025)	37.8° (2020)
6	65.7°	52.3°	33%	85.5° (2007)	39.4° (1991)
7	64.2°	51.3°	28%	85.8° (2007)	36° (2000)
8	65.3°	51.8°	33%	85.6° (2007)	37.6° (2022)
9	64.2°	51.3°	27%	81.5° (2018)	36.7° (2000)
10	63.1°	50.2°	20%	81° (2010)	37° (1964)
11	64.2°	50.2°	25%	82.8° (2024)	34.9° (2009)
12	63.3°	50.5°	35%	79.2° (1995)	34° (2006)
13	62.6°	49.5°	35%	82° (1975)	34° (2018)
14	62.2°	49.6°	38%	80.4° (1975)	35.2° (1979)
15	61.3°	49.1°	42%	80.2° (1962)	36.1° (2006)
16	59.5°	48.4°	33%	80.4° (1963)	36.1° (2018)
17	59.7°	47.1°	32%	78.6° (2016)	35.4° (2004)
18	59°	46°	35%	76.6° (2007)	34.2° (2022)
19	58.3°	46.4°	38%	77° (1971)	32.4° (1992)
20	59.5°	45.9°	28%	78.1° (2003)	31.8° (1972)
21	59.5°	47.1°	27%	77.9° (2024)	30° (2018)
22	59.4°	46.2°	28%	78.4° (1963)	30.7° (1976)
23	59°	46.6°	33%	78.8° (1963)	32.7° (1976)
24	57.6°	46.6°	40%	78.1° (1963)	27.7° (1981)
25	56.8°	45.3°	32%	75° (1963)	32° (1962)
26	56.1°	45.3°	32%	78.4° (1963)	27.1° (1962)
27	55.9°	44.6°	37%	73.4° (2014)	31.5° (1980)
28	55.4°	44.1°	20%	72.5° (1999)	29.5° (1976)
29	55.6°	43.7°	20%	77.9° (2024)	30.6° (1988)
30	57°	44.6°	28%	76.6° (2024)	30.2° (1988)
31	55.9°	44.8°	42%	72.7° (1974)	28° (2023)