Lafayette County Climate
Lafayette County, Wisconsin
Avg Annual Temp
46.2°F
Annual Precip
37.5"
Annual Snowfall
36.4"
Extreme Heat Days
9.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Lafayette County Weather
A Temperate Climate in the Driftless Area
Lafayette County maintains an annual average temperature of 46.2°F, which sits below the national median but remains warmer than many northern peers. This humid continental climate is characterized by significant seasonal swings and a healthy 37.5 inches of annual precipitation.
Warmer and Wetter Than the State Average
The county is noticeably warmer than the Wisconsin state average of 44.4°F. It also receives about three more inches of annual precipitation than the statewide average of 34.5 inches.
Outpacing Central Wisconsin Neighbors in Heat
Lafayette is significantly warmer than central counties like Marathon, which averages only 43.6°F. It shares a similar moist profile with other southern Wisconsin counties, exceeding the regional average for rainfall.
Hot Summers and Snowy Winters
Residents experience 9 extreme heat days over 90°F during the 71.0°F July peak. Winters are cold but slightly milder than the north, averaging 36.4 inches of snow and a 17.8°F January temperature.
Planning for Southern Wisconsin Extremes
Homeowners should prioritize efficient HVAC systems to handle both the 21.1°F winter average and frequent summer heat spikes. Durable rain gutters are also a must to manage the 37.5 inches of annual precipitation.
Frequently Asked Questions
What is the average temperature in Lafayette County?
How much rain does Lafayette County get?
Does it snow in Lafayette County?
How hot does Lafayette County get in summer?
How cold are winters in Lafayette County?
Track your own weather in Lafayette 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.