As of 13:43 CDT

Blue Island, IL weather in October

85°

Blue Island, Sunday, 9 August, 13:43

Rain. Feels like 95°. High 86°, low 63°.

Pressure29.94 inHg

Wind10.8 mph SW

Humidity74%

Visibility6.2 mi

Dew point76°

See detailed hourly forecast

In October, Blue Island, IL averages a high of 61.3° and a low of 48.1°. About 3.3 inches of precipitation fall over the month (10 wet days). The record high is 88.5° (2025) and the record low 26.1° (1962). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	68.9°	54.1°	18%	86° (2019)	40.8° (2003)
2	68.4°	54.1°	32%	83.3° (1971)	37.4° (2003)
3	67.3°	53.8°	40%	88.5° (2025)	34.7° (1974)
4	66.2°	52.7°	33%	85.6° (2025)	39.2° (2014)
5	66.4°	51.8°	28%	84.4° (2025)	35.4° (2020)
6	65.7°	51.8°	33%	85.8° (2007)	39° (1991)
7	64.2°	50.5°	28%	86° (2007)	35.2° (2000)
8	65.3°	51.3°	33%	85.6° (2007)	35.2° (2022)
9	64.6°	50.7°	27%	82° (2018)	35.8° (2000)
10	63.5°	49.5°	23%	80.6° (2010)	36.5° (1964)
11	64.2°	49.6°	25%	81.9° (2024)	34.2° (2009)
12	63.5°	50°	35%	79.3° (1995)	33.6° (2006)
13	62.8°	48.9°	37%	82.2° (1975)	32.4° (2018)
14	62.4°	49.1°	38%	80.6° (1975)	34.7° (1979)
15	61.3°	48.7°	42%	80.4° (1963)	35.4° (2006)
16	59.5°	47.8°	33%	81° (1963)	35.2° (2018)
17	59.7°	46.6°	33%	78.8° (2016)	34.5° (2004)
18	59°	45.7°	35%	76.6° (2007)	31.6° (2018)
19	58.1°	45.9°	38%	77.2° (1971)	31.6° (1992)
20	59.5°	45.3°	30%	78.1° (2003)	30.6° (1972)
21	59.7°	46.6°	27%	78.8° (2024)	27.1° (2018)
22	59.4°	45.9°	28%	78.8° (1963)	30° (1976)
23	59°	46°	33%	79.2° (1963)	31.8° (1976)
24	57.6°	46°	40%	78.3° (1963)	26.8° (1981)
25	56.8°	44.8°	32%	75.2° (1963)	31.3° (2006)
26	56.1°	44.6°	32%	78.4° (1963)	26.1° (1962)
27	55.9°	43.9°	37%	73.2° (2014)	31.1° (1962)
28	55.6°	43.3°	22%	72.9° (1999)	29.3° (1976)
29	55.6°	43.2°	20%	79.2° (2024)	29.8° (1980)
30	57.2°	44.1°	30%	77.7° (2024)	29.5° (1988)
31	56.1°	44.4°	40%	73° (1974)	27° (2023)