Illinois January Weather

Illinois weather averages and all-time records in the month of January from 1991–2020 based on data made available by the NOAA.

State:

Month:

Illinois Cities

January weather averages for various places in Illinois, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation	Snow
Aledo	30.2	13.2	69	-33	1.6	7.6
Aurora	31.0	15.0	66	-26	1.8	10.7
Belleville	42.8	24.4	75	-27	2.5	3.7
Bloomington-Normal	33.3	15.8	69	-24	2.4	6.7
Carbondale	41.5	23.4	76	-25	3.3	3.4
Carlyle	37.6	20.3	75	-22	3.1	n/a
Champaign	33.7	17.8	70	-25	2.0	n/a
Charleston	37.1	21.1	71	-27	2.9	9.1
Chicago	32.4	19.0	67	-25	2.3	12.4
Danville	35.4	19.7	70	-26	2.5	5.9
Decatur	35.8	19.7	73	-23	2.3	6.3
Dixon	29.2	12.9	65	-32	1.9	12.7
Du Quoin	41.1	24.4	76	-22	3.1	3.5
Elgin	29.9	14.0	63	-27	1.9	10.0
Elizabeth	28.2	9.9	59	-35	1.3	9.0
Fairfield	40.0	23.2	77	-23	3.3	3.6
Freeport	28.2	11.3	61	-31	1.6	9.4
Galesburg	30.4	14.8	68	-27	1.7	8.5
Geneseo	30.5	15.1	66	-25	1.7	9.0
Hoopeston	33.6	18.6	69	-24	2.1	7.1
Jacksonville	36.0	17.7	75	-24	1.9	6.8
Joliet	31.5	16.2	67	-26	1.9	5.7
Kankakee	32.8	16.1	68	-29	2.3	8.2
Kewanee	29.6	13.3	67	-27	1.9	8.5
Lincoln	34.4	17.2	70	-34	2.2	6.3
Moline	31.3	14.7	69	-33	1.7	10.8
Monmouth	32.7	15.5	69	-25	1.9	7.6
Morris	31.5	15.7	68	-23	2.1	8.5
Morrison	30.3	12.0	65	-35	1.5	10.2
Mt. Vernon	38.8	22.5	75	-21	2.6	3.5
Olney	38.2	21.5	75	-24	3.4	4.3
Ottawa	32.0	15.2	68	-26	1.8	9.1
Pana	36.9	20.2	74	-25	2.7	5.0
Paris	34.8	18.8	71	-23	2.8	7.9
Peoria	33.0	17.4	71	-25	2.1	7.6
Quincy	34.6	18.6	73	-21	1.6	n/a
Rantoul	34.1	16.3	70	-27	2.2	3.8
Rockford	29.2	13.9	63	-31	1.6	10.7
Springfield	35.4	19.4	73	-21	2.0	6.6
Tuscola	34.8	18.9	73	-25	2.4	5.6