Climate and Weather Resources
Historical climate data for Idaho
- Access historical climate data from land-based weather stations in Idaho through the National Oceanic and Atmospheric Administration’s (NCEI).
- Climate Normals (30-year averages of temperature and precipitation) calculated by .
Drought
- The (USDM) provides maps of current drought conditions, forecasts and other drought information for Idaho and the U.S. Idaho Climate Service partners with Idaho agencies to assess evolving drought conditions and demarcate drought severity boundaries for the USDM maps.
Mountain snow
- Most of the water found in Idaho’s rivers, streams, lakes and even groundwater originates as winter snowpack in the mountains. Spring and summer snowmelt delivers runoff to rivers where it provides recreation, irrigation, environmental flows, municipal and industrial supplies, and a myriad of other uses.
- Maps of real-time mountain snow observations from the operated by the USDA’s Natural Resource Conservation Service.
Streamflow and water supply
- Access data from the U.S. Bureau of Reclamation’s network of Hydrologic and Meteorologic monitoring stations throughout the Pacific Northwest.
- Access data for Idaho.
Evaporation
- Evaporation affects the amount of irrigation water needed to grow crops. The U.S. Bureau of Reclamation’s network collects weather data and calculates evaporation at a network of stations across Idaho and the western U.S.
Current Weather
Map of current weather observations across Idaho from the National Weather Service.
Weather Alerts
...RED FLAG WARNING IN EFFECT 1PM TO MIDNIGHT MDT FRIDAY FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 427 AND 413... * AFFECTED AREA...Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * IMPACTS...Critical fire weather conditions are expected Friday. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly. * THUNDERSTORMS...25 to 35 percent coverage expected.
...RED FLAG WARNING IN EFFECT 1PM TO MIDNIGHT MDT FRIDAY FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 427 AND 413... * AFFECTED AREA...Fire Weather Zone 413 Caribou Range/Caribou NF. * IMPACTS...Critical fire weather conditions are expected Friday. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly. * THUNDERSTORMS...25 to 45 percent coverage expected.
By Area