Sac County Climate
Sac County, Iowa
Avg Annual Temp
46.6°F
Annual Precip
33.0"
Annual Snowfall
30.9"
Extreme Heat Days
13.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Sac County Weather
Sac County Maintains a Cool Continental Profile
Sac County averages 46.6°F annually, placing it significantly below the national median of approximately 54°F. This typical continental climate experiences sharp seasonal shifts and stays roughly 7 degrees cooler than the broader U.S. average.
Colder Than the Average Iowa County
The county's annual average of 46.6°F sits 1.4 degrees below the Iowa state average of 48.0°F. While Iowa is known for its chill, Sac County remains one of the state's cooler jurisdictions.
Drier Conditions Relative to Eastern Neighbors
With 33.0 inches of annual precipitation, Sac County receives about 3 inches less rain and snow than the state average. This puts it on the drier end of the spectrum compared to Iowa's more humid eastern counties.
Bitter Winters and Moderate Summer Heat
Winter temperatures drop to an average of 17.1°F in January, accompanied by 30.9 inches of annual snowfall. Summers are mild with a July average of 72.5°F, though residents still face 13 days of extreme heat over 90°F.
Prepare for Snow and Seasonal Fluctuations
Heavy-duty snow removal equipment is essential for managing the nearly 31 inches of annual snowfall. Residents should also insulate homes thoroughly to handle winter lows that regularly average near 20.5°F.
Frequently Asked Questions
What is the average temperature in Sac County?
How much rain does Sac County get?
Does it snow in Sac County?
How hot does Sac County get in summer?
How cold are winters in Sac County?
Track your own weather in Sac 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.