Monroe County Climate
Monroe County, Iowa
Avg Annual Temp
50.0°F
Annual Precip
36.5"
Annual Snowfall
30.0"
Extreme Heat Days
15.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Monroe County Weather
Moderate Plains Temperature Profile
Monroe County averages 50.0°F annually, placing it below the national median but in a comfortable temperate range for Iowa. Annual precipitation stands at 36.5 inches.
Above the Iowa Average
At 50.0°F, Monroe is 2 degrees warmer than the state average of 48.0°F. This southern location provides slightly milder winters than much of the state.
Consistent Regional Climate
Monroe shares a similar 50-degree average with Muscatine but is notably warmer than Mitchell to the north. Snowfall is about 13 inches lower than in O'Brien County.
Fifteen Days of High Heat
Summers feature 15 days of extreme heat, while winters are marked by 30.0 inches of snow. The average winter temperature remains relatively high for the state at 25.5°F.
Stable Moisture, Southern Warmth
With 36.5 inches of precipitation, residents should ensure proper property drainage. Winter gear should be rated for the 22.2°F January average, which is milder than northern Iowa.
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.