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Rochester September Weather

Averages and records for weather in Rochester, Minnesota in the month of September.

Typical Rochester September Weather 1991–2020
Average daily high	71.7 °F
Average daily low	50.5 °F
Average monthly precipitation	3.6 inches
Average monthly snow	none
Daily chance of precipitation	31.0%
Daily chance of snow	0%

Rochester September Weather Records 1893–2024
Highest temperature	100 °F	September 6, 1913
Lowest temperature	22 °F	September 28, 1942
Highest daily low	74 °F	September 17, 1955
Lowest daily high	34 °F	September 29, 1945
Hottest average high temperature	81.9 °F	1908
Coldest average high temperature	62.2 °F	1965
Most daily precipitation	6.0 inches	September 12, 1978
Most monthly precipitation	10.5 inches	1986
Most daily snow	0.8 inches	September 30, 1961
Most monthly snow	0.8 inches	1961

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	75.9	55.6	94	34
September 2	75.8	55.4	94	35
September 3	75.7	55.1	94	33
September 4	75.5	54.9	95	36
September 5	75.3	54.7	94	34
September 6	75.0	54.4	100	36
September 7	74.7	54.0	96	34
September 8	74.3	53.6	97	37
September 9	74.0	53.1	97	37
September 10	73.6	52.7	98	29
September 11	73.2	52.3	94	24
September 12	72.9	51.9	94	30
September 13	72.6	51.5	93	32
September 14	72.2	51.1	95	33
September 15	71.8	50.7	96	31
September 16	71.6	50.4	96	28
September 17	71.2	49.9	94	29
September 18	70.8	49.5	93	26
September 19	70.4	49.2	92	30
September 20	69.9	48.7	92	28
September 21	69.4	48.3	94	27
September 22	69.0	47.9	95	24
September 23	68.7	47.6	92	28
September 24	68.5	47.3	89	27
September 25	68.1	46.9	89	26
September 26	67.7	46.4	86	26
September 27	67.3	46.0	86	28
September 28	66.8	45.6	83	22
September 29	66.4	45.2	86	23
September 30	65.8	44.7	90	24

Weather Station Details

Years	Station	Coordinates
1893–2024	Rochester International Airport	location