Wisconsin has an average annual temperature of
45.3°F
(across all 15 cities) with approximately
873 mm of annual precipitation
and average humidity of 80%.
The warmest city is La Crosse
with average July highs of 90.7°F,
while Eau Claire
is the coldest with average January lows of -24.3°F.
This page covers 45 years of NASA POWER climate data (1981–2025)
including temperature, rainfall, humidity, wind speed, and solar radiation.
Aug is typically the warmest month across Wisconsin with average highs around
89.1°F, while
Jan is the coldest with average lows near
-14.3°F.
Jun is the wettest month with approximately
111 mm of rainfall on average.
Month
Max Temp
Min Temp
Avg Temp
Rain (mm)
Humidity
Wind (m/s)
Solar (kWh/m²)
Jan
39.4°F
-14.3°F
12.6°F
34
91%
4.3
1.60
Feb
46°F
-8.5°F
18.9°F
34
87%
4.3
2.60
Mar
62.2°F
5.9°F
34.2°F
56
80%
4.1
3.70
Apr
72.3°F
22.3°F
47.3°F
84
77%
4.0
4.60
May
79°F
32.4°F
55.8°F
96
76%
3.3
5.50
Jun
85.3°F
43.2°F
64.2°F
111
76%
2.9
6.00
Jul
88.7°F
52°F
70.3°F
102
75%
2.7
6.00
Aug
89.1°F
51.1°F
70.2°F
102
74%
2.7
5.20
Sep
85.1°F
39.2°F
62.2°F
87
75%
3.1
4.10
Oct
75.4°F
27.1°F
51.3°F
74
77%
3.5
2.70
Nov
60.6°F
13.6°F
37.2°F
57
82%
3.8
1.70
Dec
44.8°F
-4.9°F
19.9°F
43
89%
3.9
1.30
📈 Wisconsin Yearly Climate Trends
🌡️ Annual Temperature Trend
State-wide avg annual high & low · Last 10 years
📈 Wisconsin Long-Term Climate Trends (1981–2025)
This chart shows how Wisconsin's average temperatures have shifted across 45 years.
Use the range buttons to focus on recent decades or view the full historical record.
Data is averaged across all 15 cities in the state.
🌧️ Annual Precipitation Trend
State-wide avg annual precipitation · Last 10 years · mm/year
🔗 Explore Cities in Wisconsin
Browse detailed weather history, monthly averages, and 45-year climate trends for every city in Wisconsin.
Kenosha is the wettest city in Wisconsin with approximately 916 mm of annual precipitation on average. View Kenosha weather history →
What is the warmest month in Wisconsin?▼
Aug is the warmest month across Wisconsin, with state-wide average highs of 89.1°F and average lows of 51.1°F.
How many cities in Wisconsin have weather data?▼
TownPillar has historical weather data for 15 cities in Wisconsin, covering 45 years of NASA POWER climate records from 1981 to 2025.
Which month has the most sunshine in Wisconsin?▼
Jul is the sunniest month across Wisconsin with an average solar radiation of 6.00 kWh/m²/day state-wide. This solar radiation data from NASA POWER is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability.
Where does this climate data come from?▼
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It includes monthly temperature, precipitation, humidity, wind speed, and solar radiation at 0.5° × 0.625° spatial resolution.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources). Data covers 45 years (1981–2025) across 15 cities in Wisconsin at monthly temporal resolution.