National Weather Service
- Country: United States
- Type: Government
- Website: www.weather.gov
- Update: 05-02
The National Weather Service (NWS), a division of the National Oceanic and Atmospheric Administration (NOAA), was established in 1870 and is headquartered in Silver Spring, Maryland, and is responsible for providing weather and hydrologic forecasts and warnings for the United States and its possessions.