Belknap County Climate
Belknap County, New Hampshire
Avg Annual Temp
46.7°F
Annual Precip
46.5"
Annual Snowfall
70.8"
Extreme Heat Days
6.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Belknap County Weather
A Classic Cold Continental Climate
Belknap County averages 46.7°F annually, falling significantly below the national median temperature. This humid continental climate experiences sharp seasonal swings typical of the New England interior.
Warmer Than the State Average
The county's annual average temperature of 46.7°F sits slightly higher than the New Hampshire state average of 45.4°F. It represents a transition zone between the warmer southern valleys and the cooler northern mountains.
Matching the Regional Precipitation Profile
Belknap receives 46.5 inches of annual precipitation, which is virtually identical to neighboring Cheshire County. However, it stays slightly warmer on average than Carroll County to its immediate north.
Consistent Snow and Moderate Heat
Winter brings 70.8 inches of annual snowfall and January averages of 21.1°F. Summers remain mild with a 68.6°F average, though residents still face about 7 days of extreme heat over 90°F each year.
Prepare for Ice and Humidity
Reliable heating systems are essential to handle the 24.1°F winter average. Residents should also invest in dehumidification and cooling for the July peak, when temperatures average 70.9°F.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.