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Galesburg September Weather

Averages and records for weather in Galesburg, Illinois in the month of September.

Typical Galesburg September Weather 1991–2020
Average daily high	76.4 °F
Average daily low	55.3 °F
Average monthly precipitation	3.8 inches
Average monthly snow	none
Daily chance of precipitation	23.4%
Daily chance of snow	0%

Galesburg September Weather Records 1895–2024
Highest temperature	100 °F	September 5, 1899
Lowest temperature	19 °F	September 30, 1899
Highest daily low	74 °F	September 6, 1990
Lowest daily high	45 °F	September 26, 1942
Hottest average high temperature	85.0 °F	1897
Coldest average high temperature	68.4 °F	1993
Most daily precipitation	7.7 inches	September 8, 1927
Most monthly precipitation	11.6 inches	1970
Most daily snow	2.0 inches	September 25, 1942
Most monthly snow	2.0 inches	1942

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
September 1	80.6	60.7	99	43
September 2	80.4	60.4	99	43
September 3	80.2	60.1	96	42
September 4	80.1	59.8	94	39
September 5	79.8	59.6	100	40
September 6	79.6	59.3	99	43
September 7	79.3	59.0	99	39
September 8	79.0	58.6	94	41
September 9	78.6	58.2	96	42
September 10	78.2	57.7	96	41
September 11	77.9	57.3	94	39
September 12	77.6	56.9	95	38
September 13	77.3	56.4	97	34
September 14	76.9	56.0	97	35
September 15	76.5	55.5	98	37
September 16	76.3	55.1	90	37
September 17	76.0	54.7	96	34
September 18	75.6	54.3	93	33
September 19	75.2	54.0	93	30
September 20	74.7	53.6	91	32
September 21	74.2	53.1	94	31
September 22	73.8	52.7	92	33
September 23	73.5	52.3	92	33
September 24	73.2	52.0	92	33
September 25	72.9	51.5	90	33
September 26	72.5	51.1	92	32
September 27	72.2	50.7	89	32
September 28	71.8	50.3	93	27
September 29	71.4	49.9	97	27
September 30	71.0	49.5	90	19

Weather Station Details

Years	Station	Coordinates
1895–2024	Galesburg	location