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Webster City September Weather

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

Typical Webster City September Weather 1991–2020
Average daily high	75.6 °F
Average daily low	49.9 °F
Average monthly precipitation	3.3 inches
Average monthly snow	none
Daily chance of precipitation	25.8%
Daily chance of snow	0%

Webster City September Weather Records 1893–2024
Highest temperature	103 °F	September 6, 1939
Lowest temperature	20 °F	September 28, 1942
Highest daily low	73 °F	September 7, 1970
Lowest daily high	42 °F	September 30, 1985
Hottest average high temperature	84.5 °F	1939
Coldest average high temperature	66.5 °F	1896
Most daily precipitation	4.6 inches	September 30, 1925
Most monthly precipitation	11.5 inches	1965
Most daily snow	none	-
Most monthly snow	none	-

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	79.7	55.4	99	34
September 2	79.5	55.1	98	40
September 3	79.4	54.8	101	34
September 4	79.2	54.5	100	34
September 5	79.0	54.3	103	37
September 6	78.7	53.9	103	38
September 7	78.5	53.5	102	36
September 8	78.1	53.1	100	34
September 9	77.7	52.7	99	35
September 10	77.3	52.2	100	34
September 11	77.0	51.8	95	30
September 12	76.6	51.4	99	31
September 13	76.3	50.9	100	31
September 14	76.0	50.5	101	33
September 15	75.6	50.0	100	30
September 16	75.4	49.7	98	30
September 17	75.2	49.3	97	30
September 18	74.8	48.9	96	25
September 19	74.4	48.5	99	31
September 20	74.0	48.1	90	28
September 21	73.5	47.6	95	26
September 22	73.1	47.2	97	21
September 23	72.7	46.9	90	27
September 24	72.5	46.5	91	28
September 25	72.2	46.1	91	27
September 26	71.9	45.6	91	25
September 27	71.5	45.1	91	24
September 28	71.1	44.7	94	20
September 29	70.7	44.3	91	24
September 30	70.2	43.9	93	23

Weather Station Details

Years	Station	Coordinates
1893–2024	Webster City	location