Illinois October Weather

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

State:

Month:

Illinois Cities

October 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	63.1	41.2	93	9	2.9	0.3
Aurora	63.3	42.4	93	11	3.7	0.0
Belleville	72.3	46.6	96	20	3.1	0.0
Bloomington-Normal	65.5	42.3	93	9	3.5	0.0
Carbondale	70.0	44.2	96	16	3.7	0.2
Carlyle	67.9	45.7	95	20	3.2	n/a
Champaign	66.2	43.0	93	13	3.1	n/a
Charleston	67.6	45.5	94	11	3.8	0.0
Chicago	63.3	46.4	94	19	3.9	0.1
Danville	66.4	44.3	93	13	3.7	0.0
Decatur	66.7	45.3	96	12	3.4	0.0
Dixon	62.5	41.0	95	7	3.1	0.0
Du Quoin	69.8	46.1	96	20	3.7	0.2
Elgin	62.5	40.9	89	11	3.3	0.0
Elizabeth	62.4	38.2	91	9	3.1	0.3
Fairfield	69.5	45.5	96	19	3.8	0.1
Freeport	61.7	39.3	90	6	3.0	0.2
Galesburg	63.2	43.0	94	17	2.8	0.0
Geneseo	63.7	43.3	92	19	3.2	0.1
Hoopeston	65.5	44.4	94	9	3.4	0.1
Jacksonville	67.8	41.9	98	9	3.0	0.0
Joliet	63.5	43.2	96	15	3.0	0.0
Kankakee	65.1	42.5	93	15	3.0	0.0
Kewanee	63.1	40.5	91	17	3.0	0.3
Lincoln	66.3	41.5	95	7	3.2	0.1
Moline	64.3	42.5	95	11	2.8	0.3
Monmouth	65.4	42.7	93	7	3.0	0.2
Morris	64.4	42.9	95	12	3.1	0.0
Morrison	63.7	39.4	93	9	2.8	0.1
Mt. Vernon	67.7	44.4	96	18	3.4	0.2
Olney	69.0	45.1	97	17	3.7	0.0
Ottawa	65.3	42.6	94	13	3.0	0.0
Pana	68.3	44.5	95	17	3.6	0.1
Paris	66.2	44.3	93	15	3.7	0.0
Peoria	64.8	44.2	93	7	3.2	0.1
Quincy	65.4	44.8	96	10	3.0	n/a
Rantoul	66.8	41.8	93	19	3.2	0.0
Rockford	62.4	41.2	91	7	2.6	0.2
Springfield	67.0	44.2	93	13	3.3	0.1
Tuscola	66.8	43.9	93	18	3.3	0.0