Cook County Climate
Cook County, Minnesota
Avg Annual Temp
37.9°F
Annual Precip
27.2"
Annual Snowfall
57.1"
Extreme Heat Days
0.98
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Cook County Weather
A Frigid National Outlier on Lake Superior
Cook County's annual average of 37.9°F is one of the lowest in the United States. Its climate is heavily influenced by its northern latitude and its proximity to the cold waters of Lake Superior.
The Coldest Average in the North Star State
Cook County is nearly five degrees colder than the Minnesota state average of 42.8°F. It records 27.2 inches of annual precipitation, which is slightly lower than the state's 30.0-inch average.
Cooler Summers than Anywhere Nearby
Cook County’s July average of 62.4°F is the lowest in the region, much cooler than Carlton or Cass. This unique lakeside effect keeps the county exceptionally stable but very cold.
A Land of Permanent Spring and Long Winters
The county sees only one day per year over 90°F, with the coolest summer average in the state at 60.2°F. Winter is long and snowy, bringing 57.1 inches of snow and a January average of 10.1°F.
Forget the AC, Buy a Heavy Coat
Air conditioning is virtually unnecessary here given the single day of extreme heat and 62.4°F July average. Focus your budget on high-quality winter tires and premium wool layers to handle the 57.1 inches of annual snow.
Frequently Asked Questions
What is the average temperature in Cook County?
How much rain does Cook County get?
Does it snow in Cook County?
How hot does Cook County get in summer?
How cold are winters in Cook County?
Track your own weather in Cook County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.