Coos County weather, town by town
22 places in Coos 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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Not your town? Type it above, or pick it below.
Measured at the NOAA stations serving these towns, daily records 1886 to 2026. Station extremes, not official state records.
Coos County Weather Facts
Coos County has 22 places on myweatherrock (19 towns, 2 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 98°F at Berlin on June 3, 1919. The coldest night is -45°F at First Connecticut Lake on February 1, 1920. The wettest day brought 6.5 inches of rain at Berlin on September 17, 1999. The biggest single-day snow measured 29.02 inches at Berlin on February 6, 2001. Those are station measurements from NOAA's daily records, 1886 to 2026, not official state records. By area the largest place is Pittsburg, about 281 square miles.
About Coos County weather
The map on the Now tab shows every Coos 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 22 Coos County towns with station normals, the warmest month is July, when the day usually reaches 78°F, and the coldest is January, when the night usually falls to 3°F. June is the wettest, with rain on about 14 days. July afternoons run from about 74°F in Clarksville to 79°F in Carroll. January nights run from about -1°F in Clarksville to 6°F in Gorham.
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.
Coos County weather records
Measured at the NOAA stations serving these towns, daily records 1886 to 2026. Station extremes, not official state records.
Common questions about Coos County weather
- What is the hottest temperature recorded at a Coos County station?
- 98°F at Berlin on June 3, 1919, in the NOAA daily station records myweatherrock holds (1886 to 2026).
- What is the coldest temperature recorded at a Coos County station?
- -45°F at First Connecticut Lake on February 1, 1920.
- What is the most rain a Coos County station has measured in one day?
- 6.5 inches at Berlin on September 17, 1999.
- What is the biggest one-day snowfall at a Coos County station?
- 29.02 inches at Berlin on February 6, 2001.
- How many Coos County towns have a weather page here?
- 22: 19 towns, 2 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 Coos 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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