Bannock County Climate
Bannock County, Idaho
Avg Annual Temp
47.5°F
Annual Precip
15.0"
Annual Snowfall
46.0"
Extreme Heat Days
35.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Bannock County Weather
Temperate but cooler than national norms
Bannock County's 47.5°F average annual temperature sits roughly six degrees below the national median. This reflects its high-altitude steppe environment in Southeast Idaho.
Slightly warmer than the state average
Despite its high elevation, the county is one degree warmer than the Idaho average of 46.5°F. This makes it a relatively comfortable hub for the region's commerce and education.
Wetter and snowier than Bingham County
Bannock receives 15.0 inches of precipitation, which is more than its neighbor Bingham to the north. It also sees double the snowfall of some nearby valley counties with 46.0 inches annually.
Thirty-five days of summer heat
Summers are warm with 35 days reaching over 90°F and a July average of 71.7°F. Winters are consistently cold, averaging 25.7°F in January with significant snow accumulation.
Invest in versatile winter equipment
A heavy-duty snow blower is a wise investment to manage the 46 inches of annual snowfall. Residents should also winterize pipes early as winter averages hover around 27.1°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.