Belknap County weather, town by town
12 places in Belknap County, New Hampshire, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1926 to 2026. Station extremes, not official state records.
Belknap County Weather Facts
Belknap County has 12 places on myweatherrock (10 towns, 1 cities, 1 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 102°F at Concord Asos on July 3, 1966. The coldest night is -37°F at Concord Asos on February 16, 1943. The wettest day brought 6.9 inches of rain at Lakeport 2 on September 16, 1932. The biggest single-day snow measured 34.02 inches at Lakeport 2 on December 17, 2020. Those are station measurements from NOAA's daily records, 1926 to 2026, not official state records. By area the largest place is Alton, about 64 square miles.
About Belknap County weather
The map on the Now tab shows every Belknap County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 12 Belknap County towns with station normals, the warmest month is July, when the day usually reaches 82°F, and the coldest is January, when the night usually falls to 12°F. December is the wettest, with rain on about 12 days. January nights run from about 10°F in Sanbornton to 13°F in Alton.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Belknap County weather records
Measured at the NOAA stations serving these towns, daily records 1926 to 2026. Station extremes, not official state records.
Common questions about Belknap County weather
- What is the hottest temperature recorded at a Belknap County station?
- 102°F at Concord Asos on July 3, 1966, in the NOAA daily station records myweatherrock holds (1926 to 2026).
- What is the coldest temperature recorded at a Belknap County station?
- -37°F at Concord Asos on February 16, 1943.
- What is the most rain a Belknap County station has measured in one day?
- 6.9 inches at Lakeport 2 on September 16, 1932.
- What is the biggest one-day snowfall at a Belknap County station?
- 34.02 inches at Lakeport 2 on December 17, 2020.
- How many Belknap County towns have a weather page here?
- 12: 10 towns, 1 cities, 1 census-designated places. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Belknap County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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