As of 14:41 CDT

Forest Park, IL weather in October

75°

Forest Park, Sunday, 9 August, 14:41

Heavy rain. Feels like 76°. High 82°, low 63°.

Pressure29.91 inHg

Wind5.7 mph SW

Humidity80%

Visibility6.2 mi

Dew point69°

See detailed hourly forecast

In October, Forest Park, IL averages a high of 61.2° and a low of 47.9°. About 3.3 inches of precipitation fall over the month (10 wet days). The record high is 89.8° (2025) and the record low 26.2° (1962). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	68.9°	54°	20%	85.8° (2019)	40.6° (2003)
2	68.4°	54°	30%	82.9° (1971)	37° (2003)
3	67.3°	53.6°	42%	89.8° (2025)	34.7° (1974)
4	66.2°	52.5°	33%	85.8° (2025)	39.2° (2014)
5	66.4°	51.6°	28%	84.6° (2025)	34.5° (2020)
6	65.7°	51.8°	33%	85.6° (2007)	38.8° (1991)
7	64.2°	50.5°	28%	86° (2007)	35.2° (2000)
8	65.3°	51.1°	33%	85.8° (2007)	34.2° (2022)
9	64.4°	50.5°	27%	82° (2018)	35.6° (2000)
10	63.3°	49.3°	22%	81.7° (2010)	35.6° (1964)
11	64.2°	49.5°	27%	82.9° (2024)	33.6° (2009)
12	63.3°	49.8°	35%	79.5° (1995)	33.3° (2006)
13	62.6°	48.6°	35%	82.6° (1975)	30.9° (2018)
14	62.2°	48.9°	40%	80.6° (1975)	34.5° (1979)
15	61.2°	48.4°	42%	80.6° (1968)	34.9° (2022)
16	59.4°	47.7°	32%	80.2° (1963)	34.7° (2018)
17	59.9°	46.4°	32%	79.2° (2016)	34.7° (2004)
18	59°	45.3°	35%	76.6° (2007)	31.3° (2018)
19	58.3°	45.7°	38%	77.4° (1971)	31.1° (1992)
20	59.5°	45.1°	30%	79° (2003)	30.9° (1972)
21	59.7°	46.4°	27%	79° (2024)	26.4° (2018)
22	59.4°	45.5°	28%	78.6° (1963)	30.2° (1976)
23	59°	45.9°	33%	78.6° (1963)	32.4° (1976)
24	57.6°	45.9°	40%	78.3° (1963)	27° (1981)
25	56.8°	44.4°	32%	74.7° (1963)	31.5° (1962)
26	55.9°	44.4°	32%	78.6° (1963)	26.2° (1962)
27	55.9°	43.7°	37%	73.9° (2014)	30.6° (1980)
28	55.4°	43.3°	20%	72.9° (1999)	28.6° (1976)
29	55.4°	43.2°	20%	79.5° (2024)	29.7° (1988)
30	57.2°	43.9°	28%	77.7° (2024)	28.8° (1988)
31	55.8°	44.2°	43%	73° (1974)	26.2° (2023)