Wausau climate — normals and trends
Wausau (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.1 °C and it receives 835 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (20.4 °C on average) and the coldest is January (-10.2 °C). Rainfall peaks in June.
Wausau averages 157 frost days, 8 hot days (≥ 30 °C) and 115 rainy days per year.
Wausau has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 165 to 150 per year over the period.
The hottest day of the period reached 36.5 °C (on 13 July 1995) and the coldest -38.5 °C (on 30 January 1951).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
WausauWisconsin
- coords
- 44.96°, -89.63°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.1°C
Average daily high
10.9°C
Average daily low
1.3°C
Annual rainfall
835mm
Sunshine / day
8.5h
Mean relative humidity
71%
Average peak wind
18.0km/h
Seasonal range
30.6°C
Frost days (< 0 °C)
157 d/yr
Hot days (≥ 30 °C)
8 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
108.4 cm
Average feels-like high
8.2 °C
Average feels-like low
-2.1 °C
Average peak gust
38.5 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
13.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.33 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.5 °C
13 July 1995
Coldest day
-38.5 °C
30 January 1951
Wettest day
82 mm
27 August 2021
Windiest day
51.0 km/h
13 March 1982
Strongest gust
125.6 km/h
13 April 1964
Hottest feels-like
40.9 °C
30 July 1999
Coldest feels-like
-43.6 °C
30 January 1951
Snowiest day
20.9 cm
18 November 1957
Sunniest day
15.4 h
21 June 2023
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -5.2 °C | +0.6 °C | 7 mm | -24 mm |
| Feb | -3.9 °C | -0.9 °C | 30 mm | +1 mm |
| Mar | 7.1 °C | +3.7 °C | 128 mm | +70 mm |
| Apr | 11.9 °C | +0.2 °C | 113 mm | +32 mm |
| May | 19.1 °C | +0.7 °C | 36 mm | -60 mm |
| Jun | 23.5 °C | +0.3 °C | 167 mm | +61 mm |
| Jul | 26.6 °C | +1.1 °C | 120 mm | +31 mm |
| Aug | 23.9 °C | -0.4 °C | 50 mm | -44 mm |
| Sep | 21.8 °C | +2.1 °C | 73 mm | -14 mm |
| Oct | 15.7 °C | +2.7 °C | 36 mm | -32 mm |
| Nov | 5.4 °C | +1.6 °C | 41 mm | -15 mm |
| Dec | -4.2 °C | -0.9 °C | 52 mm | +12 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Wausau?
Wausau has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.1 °C and it receives 835 mm of precipitation per year.
What is the hottest day ever recorded in Wausau?
The hottest day measured in Wausau between 1940 and 2025 was 13 July 1995, reaching 36.5 °C.
What is the coldest day in Wausau?
The coldest day measured in Wausau between 1940 and 2025 was 30 January 1951, at -38.5 °C.
Does it snow in Wausau?
Yes. Wausau gets on average 108.4 cm of snow per year and has around 157 frost days.
Has the climate of Wausau warmed?
Yes: Wausau warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wausau?
The wettest day measured in Wausau between 1940 and 2025 was 27 August 2021, with 82 mm of rain in 24 hours.
What was the windiest day in Wausau?
The windiest day measured in Wausau between 1940 and 2025 was 13 March 1982, with winds reaching 51.0 km/h.
What is the warmest month in Wausau?
The warmest month in Wausau is July (20.4 °C on average); the coldest is January (-10.2 °C).
How much does it rain in Wausau?
Wausau receives on average 835 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Wausau?
Wausau gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Wausau?
The heaviest 24-hour snowfall measured in Wausau between 1940 and 2025 was 18 November 1957, with 20.9 cm.
Are there tropical nights in Wausau?
Yes: Wausau has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wausau?
In Wausau, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 30 July 1999, and the lowest was -43.6 °C on 30 January 1951.
Compare Wausau with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wausau