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Hyannis September Weather

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

Typical Hyannis September Weather 1991–2020
Average daily high	71.9 °F
Average daily low	57.3 °F
Average monthly precipitation	3.8 inches
Average monthly snow	none
Daily chance of precipitation	25.7%
Daily chance of snow	0%

Hyannis September Weather Records 1893–2024
Highest temperature	95 °F	September 2, 1953
Lowest temperature	26 °F	September 29, 1957
Highest daily low	77 °F	September 2, 1959
Lowest daily high	48 °F	September 22, 1904
Hottest average high temperature	77.5 °F	2015
Coldest average high temperature	66.9 °F	1905
Most daily precipitation	6.0 inches	September 4, 2010
Most monthly precipitation	13.7 inches	1996
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	75.5	61.0	92	46
September 2	75.3	60.7	95	42
September 3	75.0	60.4	88	44
September 4	74.9	60.2	86	40
September 5	74.6	60.0	86	41
September 6	74.4	59.6	88	38
September 7	74.1	59.3	88	42
September 8	74.0	59.1	93	38
September 9	73.7	59.0	88	39
September 10	73.4	58.7	91	37
September 11	73.1	58.4	91	40
September 12	72.8	58.2	90	36
September 13	72.6	57.9	88	37
September 14	72.3	57.6	82	38
September 15	72.0	57.3	85	38
September 16	71.7	57.0	86	35
September 17	71.4	56.7	82	32
September 18	71.1	56.4	84	36
September 19	70.8	56.1	87	33
September 20	70.5	55.8	86	33
September 21	70.2	55.5	88	35
September 22	69.8	55.2	94	29
September 23	69.5	54.6	86	32
September 24	69.1	54.2	84	31
September 25	68.8	53.9	83	29
September 26	68.6	53.6	81	37
September 27	68.3	53.5	85	30
September 28	68.0	53.2	80	29
September 29	67.6	52.8	80	26
September 30	67.3	52.4	80	32

Weather Station Details

Years	Station	Coordinates
1893–2024	Hyannis	location