Hillsdale County Climate
Hillsdale County, Michigan
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
47.9°F
Annual Precip
39.5"
Annual Snowfall
44.1"
Extreme Heat Days
9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
2,649
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hillsdale County
Climate Verdict
Hillsdale County has a cool, averaging 47.9°F annually, moderate rainfall of 39.5 inches per year, rare extreme heat with only 9.2 days above 90°F annually, moderate snowfall of 44.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 22.8°F. summers are warm — July averages 71.2°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
Hillsdale County closely matches the Michigan statewide average temperature of 45.7°F, it is also noticeably wetter, receiving 5.2 inches more precipitation than the state average.
Climate Profile
About Hillsdale County Weather
Southern Michigan's Mildest Tier
Hillsdale County’s annual average temperature of 47.9°F is warmer than many northern peers but still trails the national median. It experiences a humid continental climate typical of the southern Great Lakes border region.
Among Michigan's Warmer Counties
Hillsdale is significantly warmer than the state average of 45.7°F, reflecting its position on the southern state line. It also receives more annual precipitation at 39.5 inches compared to the Michigan average of 34.5 inches.
Damp and Moderate Conditions
With 39.5 inches of precipitation, Hillsdale is wetter than many of its central Michigan neighbors. Its 44.1 inches of annual snowfall is typical for the southern tier, where lake-effect impact is reduced.
Extended Summer and Gentle Winters
July averages a warm 71.2°F with 9 days of extreme heat exceeding 90°F. Winters are relatively mild by Michigan standards, with January temperatures averaging 22.8°F.
Focus on Moisture and Heat
Given the 39.5 inches of precipitation, ensuring proper basement drainage and gutter maintenance is vital for residents. Efficient cooling systems are recommended to handle the warm 71°F summers and 9 extreme heat days.
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.