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Hanover September Weather

Averages and records for weather in Hanover, New Hampshire in the month of September.

Typical Hanover September Weather 1991–2020
Average daily high	72.6 °F
Average daily low	51.0 °F
Average monthly precipitation	3.4 inches
Average monthly snow	none
Daily chance of precipitation	38.4%
Daily chance of snow	0%

Hanover September Weather Records 1884–2024
Highest temperature	97 °F	September 10, 2002
Lowest temperature	22 °F	September 27, 1947
Highest daily low	72 °F	September 6, 2018
Lowest daily high	41 °F	September 29, 1911
Hottest average high temperature	79.0 °F	2015
Coldest average high temperature	62.5 °F	1893
Most daily precipitation	3.2 inches	September 17, 1999
Most monthly precipitation	8.9 inches	1938
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	77.5	55.2	94	37
September 2	77.2	54.8	95	36
September 3	76.9	54.6	93	36
September 4	76.7	54.4	93	36
September 5	76.5	54.1	90	37
September 6	76.3	53.8	91	35
September 7	76.0	53.6	93	36
September 8	75.8	53.4	94	34
September 9	75.4	53.1	97	33
September 10	75.0	52.8	97	30
September 11	74.7	52.4	95	29
September 12	74.3	52.1	91	30
September 13	73.9	51.8	91	29
September 14	73.6	51.6	92	29
September 15	73.2	51.4	94	25
September 16	72.7	51.0	94	25
September 17	72.3	50.7	86	30
September 18	71.8	50.3	88	31
September 19	71.4	49.9	87	29
September 20	71.0	49.6	90	28
September 21	70.5	49.2	88	28
September 22	70.0	48.8	93	25
September 23	69.5	48.4	91	24
September 24	69.1	47.9	90	25
September 25	68.8	47.5	90	28
September 26	68.5	47.2	88	25
September 27	68.1	47.0	89	22
September 28	67.6	46.6	83	23
September 29	67.2	46.1	84	22
September 30	66.8	45.6	84	24

Weather Station Details

Years	Station	Coordinates
1884–2024	Hanover	location