Clay County Climate
Clay County, Iowa
Avg Annual Temp
46.5°F
Annual Precip
28.9"
Annual Snowfall
43.3"
Extreme Heat Days
17.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Clay County Weather
A cool and dry continental climate
Clay County's annual average temperature of 46.5°F reflects a typical northern Midwest climate. It is cooler than the national median and notably drier than many other humid continental regions.
Among the driest counties in Iowa
Clay County receives just 28.9 inches of annual precipitation, well below the state average of 36.1 inches. The average temperature of 46.5°F also sits 1.5 degrees below the state norm.
Significant snowfall despite lower total precipitation
While total moisture is low, Clay County receives a high 43.3 inches of annual snowfall. This exceeds the snowfall in several neighboring counties and highlights a winter-heavy precipitation pattern.
Intense winters and standard Iowa summers
Summer averages 71.0°F with 17 days of extreme heat reaching 90°F. Winter is defined by an average temperature of 19.8°F and consistent snow accumulation throughout the season.
Snow management is a winter priority
Residents must plan for 43.3 inches of snow, necessitating heavy-duty blowers or plows. Because the area is relatively dry at 28.9 inches of total rain, xeriscaping or drought-resistant lawns may be beneficial during the summer.
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.