Monroe County Climate
Monroe County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.0°F
Annual Precip
36.5"
Annual Snowfall
30.0"
Extreme Heat Days
15
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
3,213
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Monroe County
Climate Verdict
Monroe County has a mild, with an average annual temperature of 50.0°F, moderate rainfall of 36.5 inches per year, rare extreme heat with only 15.2 days above 90°F annually, moderate snowfall of 30.0 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 22.2°F. summers are warm — July averages 74.5°F. Residents experience a substantial 52°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Monroe County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Monroe County closely matches the Iowa statewide average temperature of 48.0°F.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.