The Global Forecast System (GFS) is a weather forecast model produced by the National Centers of Environmental Prediction (NCEP).

The GFS web service, available worldwide, delivers time series of :

• Temperature (at 2 m)
• Relative Humidity (at 2 m)
• Pressure (at 2 m)
• Wind speed and direction (at 10 m)
• Rainfall
• Snowfall
• Snow depth
• Global Horizontal Irradiation (GHI)

Time step range from 1 min up to 1 month. The spatial resolution is 0,25°. Data are available from 1 month ago up to day+3.