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Rochester September Weather

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

Typical Rochester September Weather 1991–2020
Average daily high	74.2 °F
Average daily low	55.4 °F
Average monthly precipitation	4.4 inches
Average monthly snow	none
Daily chance of precipitation	28.6%
Daily chance of snow	0%

Rochester September Weather Records 1900–2024
Highest temperature	97 °F	September 12, 1983
Lowest temperature	28 °F	September 29, 1957
Highest daily low	75 °F	September 4, 1900
Lowest daily high	52 °F	September 24, 1963
Hottest average high temperature	79.6 °F	1983
Coldest average high temperature	68.0 °F	1963
Most daily precipitation	6.4 inches	September 2, 2021
Most monthly precipitation	11.6 inches	2008
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	78.4	59.2	95	41
September 2	78.1	58.9	95	42
September 3	77.9	58.6	97	42
September 4	77.6	58.4	93	44
September 5	77.3	58.1	93	45
September 6	77.0	57.8	90	41
September 7	76.8	57.5	92	35
September 8	76.5	57.3	95	39
September 9	76.3	57.1	94	36
September 10	75.9	56.9	92	40
September 11	75.5	56.6	92	39
September 12	75.2	56.3	97	40
September 13	74.9	56.0	91	39
September 14	74.6	55.8	89	37
September 15	74.3	55.6	87	35
September 16	74.0	55.2	83	36
September 17	73.5	55.0	90	37
September 18	73.2	54.6	89	35
September 19	72.9	54.3	85	32
September 20	72.5	54.0	88	35
September 21	72.2	53.7	92	35
September 22	71.8	53.4	86	30
September 23	71.4	52.8	90	32
September 24	71.1	52.4	91	33
September 25	70.8	52.0	85	30
September 26	70.5	51.7	84	35
September 27	70.2	51.5	86	31
September 28	69.8	51.2	85	32
September 29	69.4	50.8	84	28
September 30	69.0	50.3	83	33

Weather Station Details

Years	Station	Coordinates
1900–2024	Rochester	location