New Hampshire September Weather

New Hampshire weather averages and all-time records in the month of September from 1991–2020 based on data made available by the NOAA.

State:

Month:

Statewide September Averages
High temperature	70.0 °F
Low temperature	46.8 °F
Precipitation	4.0 inches

New Hampshire Cities

September weather averages for various places in New Hampshire, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation	Snow
Berlin	69.6	46.0	95	20	3.3	0.0
Colebrook	68.4	44.4	94	18	3.5	0.0
Concord	73.8	48.3	98	20	3.6	0.0
Durham	74.4	50.7	99	21	3.8	0.0
Greenland	73.3	52.0	96	23	4.0	0.0
Hanover	72.6	51.0	97	22	3.4	0.0
Keene	74.1	47.8	101	19	4.3	0.0
Lebanon	73.5	48.8	96	20	3.4	n/a
Manchester	74.3	53.1	96	26	3.7	n/a
Mt. Washington	48.7	37.0	69	9	7.7	1.2
Nashua	74.8	50.7	99	23	4.0	0.0