< Previous Month Next Month >

Oshkosh September Weather

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

Typical Oshkosh September Weather 1991–2020
Average daily high	72.6 °F
Average daily low	53.0 °F
Average monthly precipitation	3.0 inches
Average monthly snow	none
Daily chance of precipitation	31.1%
Daily chance of snow	0%

Oshkosh September Weather Records 1893–2024
Highest temperature	99 °F	September 10, 1931
Lowest temperature	25 °F	September 22, 1974
Highest daily low	79 °F	September 4, 1895
Lowest daily high	40 °F	September 30, 1899
Hottest average high temperature	80.5 °F	1908
Coldest average high temperature	64.5 °F	1993
Most daily precipitation	4.6 inches	September 11, 1986
Most monthly precipitation	11.5 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	77.0	58.1	97	35
September 2	76.8	57.8	98	40
September 3	76.7	57.5	95	35
September 4	76.6	57.3	95	39
September 5	76.4	57.0	93	38
September 6	76.1	56.8	94	37
September 7	75.9	56.5	95	38
September 8	75.5	56.1	98	37
September 9	75.2	55.6	98	38
September 10	74.8	55.2	99	31
September 11	74.5	54.9	98	35
September 12	74.1	54.4	95	34
September 13	73.8	54.1	94	30
September 14	73.3	53.7	97	28
September 15	72.9	53.3	98	32
September 16	72.5	52.8	93	32
September 17	72.1	52.4	91	32
September 18	71.6	52.0	93	32
September 19	71.2	51.6	91	32
September 20	70.7	51.1	92	29
September 21	70.2	50.7	89	32
September 22	69.7	50.2	93	25
September 23	69.3	49.8	93	28
September 24	69.0	49.5	92	27
September 25	68.7	49.1	91	28
September 26	68.4	48.8	91	28
September 27	67.9	48.4	85	29
September 28	67.6	48.0	91	28
September 29	67.2	47.6	88	25
September 30	66.8	47.2	87	27

Weather Station Details

Years	Station	Coordinates
1893–2024	Oshkosh	location