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Plymouth September Weather

Averages and records for weather in Plymouth, Wisconsin in the month of September.

Typical Plymouth September Weather 1991–2020
Average daily high	71.9 °F
Average daily low	50.8 °F
Average monthly precipitation	2.8 inches
Average monthly snow	none
Daily chance of precipitation	30.7%
Daily chance of snow	0%

Plymouth September Weather Records 1910–2024
Highest temperature	98 °F	September 2, 1953
Lowest temperature	25 °F	September 26, 1926
Highest daily low	75 °F	September 2, 1953
Lowest daily high	41 °F	September 26, 1942
Hottest average high temperature	77.7 °F	2004
Coldest average high temperature	64.7 °F	1924
Most daily precipitation	6.1 inches	September 11, 1986
Most monthly precipitation	13.7 inches	1986
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	76.2	55.8	97	38
September 2	76.0	55.5	98	40
September 3	75.8	55.3	94	40
September 4	75.7	55.0	92	41
September 5	75.5	54.7	91	39
September 6	75.2	54.4	92	39
September 7	75.0	54.2	95	37
September 8	74.7	53.8	96	39
September 9	74.3	53.3	95	36
September 10	74.0	52.9	97	34
September 11	73.6	52.5	96	36
September 12	73.3	52.1	92	38
September 13	73.0	51.8	94	33
September 14	72.6	51.4	96	30
September 15	72.2	51.0	95	36
September 16	71.7	50.7	91	30
September 17	71.3	50.3	89	35
September 18	70.9	49.9	91	32
September 19	70.4	49.5	90	30
September 20	70.0	49.2	89	30
September 21	69.5	48.7	90	34
September 22	69.0	48.3	89	28
September 23	68.7	47.9	91	26
September 24	68.4	47.5	91	28
September 25	68.1	47.2	89	28
September 26	67.8	46.9	89	25
September 27	67.4	46.5	86	30
September 28	67.0	46.1	87	29
September 29	66.6	45.6	84	28
September 30	66.2	45.3	83	28

Weather Station Details

Years	Station	Coordinates
1910–2024	Plymouth WWTP	location