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Cedar Rapids September Weather

Averages and records for weather in Cedar Rapids, Iowa in the month of September.

Typical Cedar Rapids September Weather 1991–2020
Average daily high	77.0 °F
Average daily low	53.9 °F
Average monthly precipitation	4.0 inches
Average monthly snow	none
Daily chance of precipitation	29.5%
Daily chance of snow	0%

Cedar Rapids September Weather Records 1892–2024
Highest temperature	105 °F	September 4, 1925
Lowest temperature	22 °F	September 30, 1899
Highest daily low	78 °F	September 2, 2011
Lowest daily high	42 °F	September 25, 1942
Hottest average high temperature	84.2 °F	1897
Coldest average high temperature	68.8 °F	1993
Most daily precipitation	7.8 inches	September 15, 1914
Most monthly precipitation	15.4 inches	1914
Most daily snow	0.5 inches	September 26, 1942
Most monthly snow	0.5 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	81.3	59.1	98	39
September 2	81.2	58.9	103	41
September 3	81.0	58.6	101	37
September 4	80.9	58.3	105	37
September 5	80.7	58.2	102	41
September 6	80.4	57.9	101	40
September 7	80.1	57.5	100	38
September 8	79.7	57.2	98	38
September 9	79.3	56.7	100	38
September 10	78.9	56.3	98	39
September 11	78.6	55.8	96	35
September 12	78.2	55.4	96	34
September 13	77.8	55.0	96	35
September 14	77.5	54.5	96	35
September 15	77.1	54.1	97	32
September 16	76.8	53.7	98	34
September 17	76.5	53.3	99	38
September 18	76.0	52.9	93	32
September 19	75.7	52.6	98	34
September 20	75.2	52.2	98	30
September 21	74.8	51.8	94	34
September 22	74.3	51.4	94	29
September 23	74.0	51.0	94	31
September 24	73.8	50.7	92	30
September 25	73.5	50.3	93	29
September 26	73.1	49.9	88	24
September 27	72.7	49.5	90	31
September 28	72.3	49.1	96	23
September 29	71.8	48.8	92	26
September 30	71.4	48.3	94	22

Weather Station Details

Years	Station	Coordinates
1892–2024	Cedar Rapids #1	location