New Hampshire Climate Data
NOAA 30-year climate normals for all 10 counties.
State Avg Temp
45.4°F
Hottest County
Rockingham County
48.2°F avg
Coldest County
Coos County
40.0°F avg
Wettest County
Carroll County
51.2" precip
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.