Power County Climate
Power County, Idaho
Avg Annual Temp
47.0°F
Annual Precip
12.1"
Annual Snowfall
36.7"
Extreme Heat Days
37.23333333333333
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Power County Weather
Temperate Snake River Plain
Power County averages 47°F, sitting slightly below the national median in a temperate climate. It receives 12.1 inches of precipitation annually, typical for the regional plain.
The Idaho Average Exemplified
At 47°F, the county is nearly identical to the Idaho state average of 46.5°F. It represents the standard climatic middle ground for Southern Idaho's agricultural heartland.
Snowier than Western Neighbors
It tracks closely with neighboring Bannock County in both temperature and aridity. Its 36.7 inches of snow is more substantial than the drier counties further west.
Steady Summers and Cold Winters
Summers feature a July average of 70.2°F and 37 days of extreme heat. Winters are cold and snowy, with average temperatures of 26.9°F and 36.7 inches of snowfall.
Prepare for Substantial Snow
Keep snow removal equipment ready to handle the 36.7-inch annual snowfall. Energy-efficient heating is vital for Januarys where the mercury averages 25.4°F.
Frequently Asked Questions
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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.