Manitowoc County Climate
Manitowoc County, Wisconsin
Avg Annual Temp
44.7°F
Annual Precip
31.7"
Annual Snowfall
40.4"
Extreme Heat Days
1.95
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Manitowoc County Weather
Lake-Moderated Coastal Conditions
Manitowoc County’s 44.7°F annual average is tempered by Lake Michigan, putting it about 10 degrees below the national median. This maritime-influenced climate provides more moderate extremes than inland Wisconsin.
Following the Wisconsin State Average
The county sits right at the Wisconsin average of 44.4°F for annual temperature. Its 31.7 inches of annual precipitation is slightly drier than the 34.5-inch state standard.
Warmer Winters Than Inland Peers
While sharing a latitude with Marathon County, Manitowoc's 19.8°F January is much milder than Marathon's 14.8°F. The lake effect keeps the county cooler in summer but warmer in winter.
Steady Snowfall and Rare Heat
Winter brings 40.4 inches of snow, while July averages a pleasant 68.0°F. The lake air keeps summer heat in check, resulting in only 2 days per year reaching 90°F.
Mild Summers Mean Cooling Savings
Residents benefit from the lake’s cooling effect, rarely needing heavy air conditioning during the mild 66.0°F summers. Winter prep should focus on moisture control to manage the damp, 22.6°F winter air.
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.