St. Croix County Climate
St. Croix County, Wisconsin
Avg Annual Temp
42.6°F
Annual Precip
32.9"
Annual Snowfall
46.5"
Extreme Heat Days
3.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About St. Croix County Weather
Deep Interior Cold
St. Croix County averages 42.6°F annually, sitting far below the national median. Its position in the western interior subjects it to intense continental air masses and sharp seasonal swings.
Below the State Average
The county's average temperature of 42.6°F is nearly two degrees colder than the Wisconsin state average of 44.4°F. This makes it one of the chillier regions in the western part of the state.
Chillier Than Southern Neighbors
St. Croix is colder than Trempealeau to the south but stays slightly warmer than Taylor County to the east. Annual precipitation of 32.9 inches is lower than the 34.5-inch state average.
Hard Winters and Short Summers
January is particularly harsh with an average of 11.1°F and 46.5 inches of annual snowfall. Summer temperatures average 67.3°F, with only 4 days reaching the 90°F mark.
Winterize Your Daily Life
Heavy-duty insulation and reliable heating are essential for winter averages that hover around 15.0°F. Keep summer gear simple, as extreme heat is a rare occurrence in this region.
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.