As of 09:15 CDT

Jerseyville, IL weather in January

80°

Jerseyville, Sunday, 9 August, 09:15

Overcast. Feels like 86°. High 95°, low 72°.

Pressure30.03 inHg

Wind10.4 mph S

Humidity85%

Visibility6.2 mi

Dew point75°

See detailed hourly forecast

In January, Jerseyville, IL averages a high of 37° and a low of 22°. About 2.4 inches of precipitation fall over the month (8 wet days). The record high is 68° (2023) and the record low -21.3° (1982). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	37.2°	22.5°	20%	61.7° (1965)	-7.4° (2018)
2	37.2°	24.3°	25%	65.8° (2004)	-1.5° (2018)
3	37.6°	23.4°	25%	68° (2023)	-2.9° (2014)
4	36°	21.2°	23%	64.6° (1997)	-5.8° (1974)
5	35.6°	20.8°	20%	57.6° (1998)	-18.8° (1999)
6	35.2°	22.1°	23%	66° (2008)	-12.5° (2014)
7	34.9°	20.5°	30%	68° (2008)	-11.4° (1968)
8	34.9°	19.9°	25%	64.4° (1965)	-10.1° (1970)
9	36.1°	21.2°	23%	55.9° (2020)	-7.4° (1962)
10	35.6°	21.2°	30%	61.7° (1975)	-17.5° (1982)
11	37.9°	22.5°	32%	61.7° (2017)	-18° (1962)
12	38.1°	22.8°	25%	64.9° (2005)	-9.2° (1974)
13	36.5°	21.2°	30%	60.3° (1960)	-8° (1997)
14	34.9°	20.7°	22%	55.6° (2016)	-10.3° (2024)
15	34.3°	19.8°	15%	59.2° (1990)	-19.3° (1979)
16	37.2°	20.8°	18%	64.4° (1990)	-9.9° (1982)
17	36.9°	22.3°	28%	60.6° (1996)	-21.3° (1982)
18	36.5°	21.4°	22%	60.6° (1996)	-13.2° (1994)
19	35.4°	19.6°	30%	61° (2006)	-17.7° (1994)
20	34.7°	20.3°	23%	54.9° (2006)	-20.7° (1985)
21	36.7°	21.4°	17%	65.7° (1986)	-19.8° (1970)
22	39.6°	24.3°	30%	62.1° (1964)	-13° (1970)
23	39.2°	24.4°	18%	66.2° (1967)	-14.3° (1963)
24	38.7°	23.2°	23%	65.3° (1967)	-13.7° (1987)
25	38.3°	23.2°	23%	58.5° (1967)	-1.8° (1979)
26	37.4°	21.9°	23%	56.1° (2002)	-6° (1987)
27	38.5°	22.5°	28%	62.4° (1999)	-6.3° (1963)
28	39.4°	23°	25%	68° (1970)	-13.5° (1963)
29	39.2°	23°	35%	61.9° (2013)	-11.7° (1966)
30	37.2°	22.5°	22%	59.7° (2012)	-8.9° (1966)
31	39.9°	23.2°	18%	66.4° (1989)	-7.2° (1965)