Macomb County Climate
Macomb County, Michigan
Avg Annual Temp
48.4°F
Annual Precip
35.4"
Annual Snowfall
39.4"
Extreme Heat Days
12.65
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Macomb County Weather
A Warmer Midwestern Urban Hub
Macomb County averages 48.4°F annually, which is slightly warmer than its rural neighbors but still below the national median. The urban heat island effect contributes to its milder thermal profile.
Significantly Above State Averages
At 48.4°F, Macomb is much warmer than the Michigan average of 45.7°F. It ranks as one of the warmest counties in the state, driven by its southern location and proximity to Lake St. Clair.
Similar to Its Southern Peers
Macomb shares nearly identical temperature and precipitation stats with Lenawee County. Both counties receive over 35 inches of precipitation and experience higher-than-average extreme heat days.
Hot Summers and Steady Snow
July brings an average of 72.3°F with 13 extreme heat days peaking above 90°F. Winter remains active with 39.4 inches of snowfall and a January average of 24.0°F.
Balance Cooling and Salting
Plan for 13 days of high AC usage during the summer months to combat extreme heat. For winter, residents need standard snow removal tools to handle the nearly 40 inches of annual accumulation.
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.