Weather Averages for Chatham, NH

7-day Forecast / 10-day Forecast

Latitude: 44°3'N, Longitude: 71°8'W, Elevation: 530.0 ft, Distance: 7.62 mi Chatham, NH Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 30 years	°F	43	17	19	30	41	54	63	68	66	57	46	35	22
Average high temperature over 30 years	°F	55	29	32	41	53	67	76	81	78	70	59	45	32
Average low temperature over 30 years	°F	31	4	6	19	30	41	50	55	53	44	33	25	12
Average precipitation over 30 years	in	47.7	3.6	3.5	3.7	4.1	4.0	4.0	3.8	4.0	3.4	4.1	5.0	4.6
Heating degree days over 30 years	days	8058	1488	1271	1073	693	338	82	22	69	239	580	885	1318
Cooling degree days over 30 years	days	281	-	-	-	-	6	34	130	100	11	-	-	-

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