Fremont County Climate
Fremont County, Iowa
Avg Annual Temp
50.7°F
Annual Precip
34.2"
Annual Snowfall
22.3"
Extreme Heat Days
24.4
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Fremont County Weather
Warmer than the Iowa norm
Fremont County averages 50.7°F annually, which is much closer to the national median than its northern neighbors. The area receives 34.2 inches of annual precipitation, making it slightly drier than the U.S. average.
One of Iowa's warmest counties
Fremont's 50.7°F average temperature is significantly higher than the state average of 48.0°F. It is one of the few Iowa counties to average over 50 degrees annually.
Milder winters than Central Iowa
Compared to Guthrie County's 48.4°F average, Fremont is notably warmer at 50.7°F. It also sees far less snow than northern counties, recording only 22.3 inches annually.
Hot summers and lighter snow
Summers are intense here, with 24 days reaching 90°F or higher. Winters are milder than the rest of the state, with a January average of 22.8°F and only 22.3 inches of snow.
Invest in heavy-duty cooling
Due to the 24 days of extreme heat, a high-performance air conditioning system is a critical investment. Residents can expect shorter winter heating seasons compared to northern Iowa counties.
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.