As of 23:42 CDT

Brookfield, IL weather in September

69°

Brookfield, Saturday, 8 August, 23:42

Clear. Feels like 70°. High 83°, low 69°.

Pressure30.03 inHg

Wind2.4 mph W

Humidity83%

Visibility6.2 mi

Dew point64°

See detailed hourly forecast

In September, Brookfield, IL averages a high of 73.7° and a low of 59.3°. About 3.3 inches of precipitation fall over the month (10 wet days). The record high is 94.1° (2011) and the record low 36.7° (1974). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	78.6°	64.2°	30%	94.1° (2011)	53.4° (1967)
2	79°	64.6°	27%	91.6° (2008)	50.5° (1965)
3	78.8°	64.2°	27%	93.6° (2023)	51.6° (1974)
4	77.5°	63.3°	33%	91.6° (2023)	49.6° (2025)
5	77.5°	62.8°	27%	90.3° (2023)	52.3° (1974)
6	77.4°	63°	38%	91.8° (1990)	49.1° (2025)
7	77.5°	62.4°	32%	92.1° (1960)	48° (2025)
8	75.7°	62.1°	35%	91.2° (1978)	47.1° (2024)
9	75.6°	61.7°	32%	92.7° (2013)	50.7° (1986)
10	76.3°	61°	30%	94.1° (2013)	50° (2017)
11	75.9°	61°	32%	90.5° (2005)	46.4° (1993)
12	75.9°	60.8°	30%	89.8° (2005)	46.8° (2014)
13	75.4°	60.8°	40%	91.9° (2005)	43.5° (2014)
14	74.1°	59.9°	32%	86.9° (1991)	44.2° (1975)
15	73°	59.2°	23%	87.8° (2024)	46.2° (2007)
16	72.5°	58.8°	25%	87.4° (2024)	47.3° (1966)
17	73.8°	59.4°	38%	88.2° (2018)	47.1° (2014)
18	73.8°	59°	32%	87.3° (2025)	47.8° (1973)
19	73.9°	59.7°	33%	90.7° (2025)	43.2° (2020)
20	73.6°	58.6°	48%	89.8° (2017)	44.2° (1991)
21	72.3°	58.1°	32%	91.4° (2017)	44.4° (1991)
22	70.3°	57°	47%	90.7° (2017)	39.6° (1995)
23	68.9°	54.7°	32%	91° (2017)	36.7° (1974)
24	69.4°	55.2°	25%	89.6° (2007)	42.1° (1976)
25	70°	55.4°	42%	89.6° (2017)	43.9° (2001)
26	70°	55.4°	30%	88° (2017)	44.2° (1984)
27	69.3°	55.2°	28%	85.6° (2021)	41.9° (1991)
28	67.5°	54.7°	25%	83.5° (1971)	43.3° (1975)
29	68.2°	53.2°	30%	88.3° (2025)	37.8° (1967)
30	69.1°	53.6°	17%	85.3° (2019)	36.9° (1993)