Monroe County Climate
Monroe County, Michigan
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
49.4°F
Annual Precip
34.7"
Annual Snowfall
40.2"
Extreme Heat Days
13
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
2,881
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 cool, averaging 49.4°F annually, moderate rainfall of 34.7 inches per year, rare extreme heat with only 12.666666666666666 days above 90°F annually, moderate snowfall of 40.2 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 24.7°F. summers are warm — July averages 72.8°F. The 48°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Monroe County is 3.7°F warmer than the Michigan statewide average of 45.7°F.
Climate Profile
About Monroe County Weather
Monroe County Is Michigan's Warmest Set Member
Monroe averages 49.4°F annually, making it the warmest county in this group. While still cooler than the 53°F national median, it represents the milder side of the Midwest.
Well Above the Michigan State Average
The county is nearly 4 degrees warmer than the state average of 45.7°F. Its southern location on Lake Erie provides a longer, warmer growing season than most of Michigan.
Warmer and Drier Than Its Northern Peers
Monroe is much warmer than Midland (48.0°F) and faces far less snow than the northern counties. It only sees about 40 inches of snow, roughly a third of what Marquette receives.
Thirteen Days of Extreme Summer Heat
Monroe leads the group with 13 days over 90°F and a July average of 72.8°F. Winters are the mildest in the group, with a December-February average of 27.3°F.
Invest in High-Quality Air Conditioning
With 13 extreme heat days, central air is a critical comfort for Monroe residents. Snow removal is less demanding here, but homeowners should still be prepared for 40 inches of annual accumulation.
Frequently Asked Questions
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Track your own weather in Monroe County
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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.