Fremont County Climate
Fremont County, Idaho
Avg Annual Temp
41.1°F
Annual Precip
21.1"
Annual Snowfall
70.1"
Extreme Heat Days
7.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Fremont County Weather
A Cold and Snowy High Country Climate
Fremont County is one of the coolest spots in the nation with an annual average of 41.1°F. It sits well below the national median temperature, reflecting its high-elevation geography.
Significantly Colder Than the Idaho Average
Averaging 41.1°F, Fremont County is more than 5 degrees colder than the Idaho state average of 46.5°F. However, it receives 21.1 inches of precipitation, making it wetter than the state average.
The Snowiest Corner of the Region
Fremont receives 70.1 inches of snow, far outpacing the 47.3 inches seen in neighboring Clark County. It is also significantly wetter than other eastern Idaho counties due to its mountain topography.
Long Winters and Very Brief Summers
Winters are harsh with a January average of 19.0°F and heavy snow. Summers are very mild, with only 7 days per year reaching 90°F and a July average of just 64.5°F.
Invest in Serious Winter Infrastructure
Heating and snow removal are the primary concerns for residents facing 70 inches of snow and 19°F Januarys. Air conditioning is rarely a priority, as extreme heat occurs only about one week per year.
Frequently Asked Questions
What is the average temperature in Fremont County?
How much rain does Fremont County get?
Does it snow in Fremont County?
How hot does Fremont County get in summer?
How cold are winters in Fremont County?
Track your own weather in Fremont 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.