Sheboygan climate — normals and trends
Sheboygan (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.7 °C and it receives 782 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 (21.6 °C on average) and the coldest is January (-6.4 °C). Rainfall peaks in August.
Sheboygan averages 120 frost days, 2 hot days (≥ 30 °C) and 112 rainy days per year.
Sheboygan 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 136 to 104 per year over the period.
The hottest day of the period reached 33.8 °C (on 16 August 1988) and the coldest -30.6 °C (on 3 February 1996).
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
SheboyganWisconsin
- coords
- 43.75°, -87.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.7°C
Average daily high
10.8°C
Average daily low
4.7°C
Annual rainfall
782mm
Sunshine / day
8.9h
Mean relative humidity
77%
Average peak wind
23.2km/h
Seasonal range
28.0°C
Frost days (< 0 °C)
120 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
112 d/yr
Annual snowfall
94.0 cm
Average feels-like high
8.4 °C
Average feels-like low
1.1 °C
Average peak gust
39.7 km/h
Tropical nights (≥ 20 °C)
21 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
33.8 °C
16 August 1988
Coldest day
-30.6 °C
3 February 1996
Wettest day
118 mm
13 September 1961
Windiest day
66.5 km/h
10 November 1998
Strongest gust
112.0 km/h
10 November 1998
Hottest feels-like
40.8 °C
4 July 2012
Coldest feels-like
-38.8 °C
10 January 1982
Snowiest day
25.6 cm
3 December 1990
Sunniest day
15.0 h
26 June 2022
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 | -2.7 °C | +0.6 °C | 6 mm | -36 mm |
| Feb | -1.9 °C | +0.4 °C | 29 mm | -7 mm |
| Mar | 5.8 °C | +3.7 °C | 76 mm | +17 mm |
| Apr | 8.8 °C | +0.7 °C | 90 mm | +10 mm |
| May | 13.5 °C | -0.4 °C | 74 mm | -5 mm |
| Jun | 21.5 °C | +1.1 °C | 88 mm | +11 mm |
| Jul | 24.9 °C | +0.2 °C | 124 mm | +44 mm |
| Aug | 23.3 °C | -1.0 °C | 84 mm | +1 mm |
| Sep | 20.8 °C | +0.5 °C | 52 mm | -22 mm |
| Oct | 15.7 °C | +1.6 °C | 46 mm | -20 mm |
| Nov | 7.7 °C | +0.9 °C | 46 mm | -12 mm |
| Dec | -1.0 °C | -1.4 °C | 49 mm | +1 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 Sheboygan?
Sheboygan has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.7 °C and it receives 782 mm of precipitation per year.
What is the hottest day ever recorded in Sheboygan?
The hottest day measured in Sheboygan between 1940 and 2025 was 16 August 1988, reaching 33.8 °C.
What is the coldest day in Sheboygan?
The coldest day measured in Sheboygan between 1940 and 2025 was 3 February 1996, at -30.6 °C.
Does it snow in Sheboygan?
Yes. Sheboygan gets on average 94.0 cm of snow per year and has around 120 frost days.
Has the climate of Sheboygan warmed?
Yes: Sheboygan warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sheboygan?
The wettest day measured in Sheboygan between 1940 and 2025 was 13 September 1961, with 118 mm of rain in 24 hours.
What was the windiest day in Sheboygan?
The windiest day measured in Sheboygan between 1940 and 2025 was 10 November 1998, with winds reaching 66.5 km/h.
What is the warmest month in Sheboygan?
The warmest month in Sheboygan is July (21.6 °C on average); the coldest is January (-6.4 °C).
How much does it rain in Sheboygan?
Sheboygan receives on average 782 mm of precipitation per year, spread over about 112 rainy days.
Is it sunny in Sheboygan?
Sheboygan gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sheboygan?
The heaviest 24-hour snowfall measured in Sheboygan between 1940 and 2025 was 3 December 1990, with 25.6 cm.
Are there tropical nights in Sheboygan?
Yes: Sheboygan has on average 21 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sheboygan?
In Sheboygan, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 4 July 2012, and the lowest was -38.8 °C on 10 January 1982.
Compare Sheboygan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sheboygan