Grafton County weather, town by town
44 places in Grafton 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 1884 to 2026. Station extremes, not official state records.
Grafton County Weather Facts
Grafton County has 44 places on myweatherrock (39 towns, 4 census-designated places, 1 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 103°F at Hanover on August 2, 1975. The coldest night is -43°F at Saint Johnsbury on December 30, 1917. The wettest day brought 8.08 inches of rain at Saint Johnsbury on July 30, 2024. The biggest single-day snow measured 49.29 inches at Mt Washington on February 25, 1969. Those are station measurements from NOAA's daily records, 1884 to 2026, not official state records. By area the largest place is Lincoln, about 130 square miles.
About Grafton County weather
The map on the Now tab shows every Grafton 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 42 Grafton County towns with station normals, the warmest month is July, when the day usually reaches 81°F, and the coldest is January, when the night usually falls to 9°F. June is the wettest, with rain on about 13 days. July afternoons run from about 79°F in Bethlehem to 83°F in Alexandria. January nights run from about 4°F in Bethlehem to 13°F in Ashland.
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.
Grafton County weather records
Measured at the NOAA stations serving these towns, daily records 1884 to 2026. Station extremes, not official state records.
Common questions about Grafton County weather
- What is the hottest temperature recorded at a Grafton County station?
- 103°F at Hanover on August 2, 1975, in the NOAA daily station records myweatherrock holds (1884 to 2026).
- What is the coldest temperature recorded at a Grafton County station?
- -43°F at Saint Johnsbury on December 30, 1917.
- What is the most rain a Grafton County station has measured in one day?
- 8.08 inches at Saint Johnsbury on July 30, 2024.
- What is the biggest one-day snowfall at a Grafton County station?
- 49.29 inches at Mt Washington on February 25, 1969.
- How many Grafton County towns have a weather page here?
- 44: 39 towns, 4 census-designated places, 1 cities. 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 Grafton 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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