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Iowa Falls September Weather

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

Typical Iowa Falls September Weather 1991–2020
Average daily high	74.9 °F
Average daily low	50.5 °F
Average monthly precipitation	3.5 inches
Average monthly snow	none
Daily chance of precipitation	27.8%
Daily chance of snow	0%

Iowa Falls September Weather Records 1893–2024
Highest temperature	101 °F	September 7, 1939
Lowest temperature	19 °F	September 30, 1899
Highest daily low	75 °F	September 1, 1960
Lowest daily high	41 °F	September 26, 1942
Hottest average high temperature	83.5 °F	1897
Coldest average high temperature	66.4 °F	1993
Most daily precipitation	4.2 inches	September 21, 1950
Most monthly precipitation	14.1 inches	1965
Most daily snow	2.0 inches	September 26, 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	79.2	56.2	96	35
September 2	79.0	55.8	96	38
September 3	78.9	55.5	100	36
September 4	78.8	55.3	97	36
September 5	78.5	55.0	96	38
September 6	78.2	54.7	101	39
September 7	78.0	54.3	101	36
September 8	77.6	53.9	98	37
September 9	77.1	53.4	98	39
September 10	76.7	52.9	99	32
September 11	76.3	52.4	95	32
September 12	76.0	52.0	98	32
September 13	75.7	51.5	98	30
September 14	75.3	51.1	100	30
September 15	75.0	50.6	99	31
September 16	74.7	50.3	98	31
September 17	74.4	49.8	95	30
September 18	74.0	49.4	93	28
September 19	73.6	49.0	97	32
September 20	73.2	48.6	90	28
September 21	72.7	48.1	95	27
September 22	72.2	47.7	95	26
September 23	71.9	47.3	90	28
September 24	71.7	47.0	89	29
September 25	71.4	46.6	90	26
September 26	71.1	46.2	89	26
September 27	70.6	45.8	89	30
September 28	70.2	45.4	91	23
September 29	69.7	45.0	88	22
September 30	69.3	44.6	92	19

Weather Station Details

Years	Station	Coordinates
1893–2024	Iowa Falls	location