As of 00:20 CDT

Freeport, IL weather in September

60°

Freeport, Wednesday, 7 October, 00:20

Clear. Feels like 59°. High 77°, low 54°.

Pressure29.85 inHg

Wind11.9 mph SW

Humidity70%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

In September, Freeport, IL averages a high of 73° and a low of 56.5°. About 3.4 inches of precipitation fall over the month (9 wet days). The record high is 92.3° (2023) and the record low 32.9° (1995). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	78.4°	61.5°	32%	91.4° (1984)	45.1° (1967)
2	78.6°	61.5°	25%	90.5° (2008)	47.1° (1967)
3	78.1°	61.9°	33%	92.3° (2023)	47.5° (1974)
4	77.4°	60.3°	30%	92.1° (2023)	44.8° (1974)
5	76.8°	59.7°	20%	88.7° (2023)	47.7° (1974)
6	77°	60.3°	30%	90.9° (1990)	43.9° (1962)
7	77.2°	59.9°	23%	90.1° (1960)	43.9° (2025)
8	75°	59.2°	33%	90.5° (2002)	42.8° (1986)
9	75.2°	58.5°	25%	91.8° (2013)	47.1° (2008)
10	75.6°	58.3°	25%	91.8° (2013)	47.7° (2008)
11	75.4°	57.9°	23%	89.8° (2021)	42.8° (1993)
12	75.2°	58.3°	33%	89.1° (2021)	43.2° (2014)
13	74.3°	58.3°	32%	87.3° (2005)	39.4° (2014)
14	73°	56.5°	30%	86° (1971)	42.4° (1975)
15	72°	56.5°	22%	86.2° (2017)	39° (2007)
16	72.1°	56.1°	25%	86.2° (2017)	41.2° (1984)
17	72.9°	56.5°	35%	88.9° (1988)	44.6° (2014)
18	73.6°	56.5°	35%	86.9° (1988)	42.6° (1973)
19	73.2°	57.2°	47%	87.8° (2021)	41.2° (1991)
20	72.3°	56.1°	37%	87.4° (2017)	37.8° (1991)
21	70.5°	55°	33%	88.3° (2024)	39.2° (1991)
22	68.7°	54.1°	40%	88.5° (2017)	36.9° (1995)
23	67.6°	51.8°	27%	88.7° (2017)	32.9° (1995)
24	68.9°	52.5°	28%	86.5° (2017)	35.4° (1989)
25	69.3°	52.7°	37%	87.3° (2017)	39° (2001)
26	69.4°	52.7°	32%	83.7° (1998)	38.8° (1984)
27	68.5°	52.2°	23%	84° (2021)	37.2° (1991)
28	67.3°	51.4°	22%	82° (1971)	35.4° (1964)
29	67.8°	50.9°	28%	85.6° (2025)	35.8° (1984)
30	68.9°	51.3°	17%	86.4° (2021)	32.9° (1993)