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
* WHAT...Temperatures as low as 28 will result in frost formation. the coldest areas will be north of Rexburg. Most areas will stay between 33 and 36 degrees. * WHERE...Eastern Magic Valley, Shoshone/Lava Beds, Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
* WHAT...Temperatures as low as 29 will result in frost formation. * WHERE...Eastern Lemhi County, especially the areas around Salmon. * WHEN...From 2 AM to 9 AM MDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
By Area