Elmore County Climate
Elmore County, Idaho
Avg Annual Temp
52.6°F
Annual Precip
10.6"
Annual Snowfall
—
Extreme Heat Days
65.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Elmore County Weather
Warmer and Drier Than National Norms
Elmore County features an annual average temperature of 52.6°F, which is much closer to the national median than most Idaho counties. Its climate is classified by long, hot summers and relatively mild winters.
One of the Warmest Spots in Idaho
With an annual average of 52.6°F, Elmore County is significantly warmer than the state average of 46.5°F. It is also quite dry, receiving only 10.6 inches of precipitation annually compared to the state's 17.0-inch average.
Beating the Heat of the Snake River Plain
Elmore is warmer than neighboring Gem County, which averages 49.7°F. It also experiences far more extreme heat days than northern neighbors like Clearwater.
Hot Summers and Mild Desert Winters
July is hot with an average of 77.1°F, contributing to a staggering 66 days per year of temperatures over 90°F. While snowfall data is limited, winters are relatively mild with a January average of 31.8°F.
Prepare for Intense Summer Heat
Reliable air conditioning is a must for the 66 days of extreme heat each year. Residents should also focus on water conservation given the low 10.6-inch annual precipitation rate.
Frequently Asked Questions
What is the average temperature in Elmore County?
How much rain does Elmore County get?
How hot does Elmore County get in summer?
How cold are winters in Elmore County?
Track your own weather in Elmore County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.