Oshkosh climate — normals and trends
Oshkosh (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 7.7 °C and it receives 785 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 (22.1 °C on average) and the coldest is January (-8.0 °C). Rainfall peaks in June.
Oshkosh averages 133 frost days, 6 hot days (≥ 30 °C) and 110 rainy days per year.
Oshkosh has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 146 to 120 per year over the period.
The hottest day of the period reached 35.7 °C (on 5 July 2012) and the coldest -31.3 °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
OshkoshWisconsin
- coords
- 44.02°, -88.54°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.7°C
Average daily high
11.2°C
Average daily low
4.2°C
Annual rainfall
785mm
Sunshine / day
8.6h
Mean relative humidity
75%
Average peak wind
22.1km/h
Seasonal range
30.1°C
Frost days (< 0 °C)
133 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
110 d/yr
Annual snowfall
94.0 cm
Average feels-like high
8.7 °C
Average feels-like low
0.7 °C
Average peak gust
35.8 km/h
Tropical nights (≥ 20 °C)
22 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
35.7 °C
5 July 2012
Coldest day
-31.3 °C
30 January 1951
Wettest day
87 mm
22 June 1990
Windiest day
66.2 km/h
11 November 1940
Strongest gust
110.5 km/h
10 November 1998
Hottest feels-like
40.5 °C
4 July 2012
Coldest feels-like
-39.4 °C
10 January 1982
Snowiest day
25.7 cm
1 December 1985
Sunniest day
15.1 h
23 June 1963
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 | -3.7 °C | +1.1 °C | 3 mm | -34 mm |
| Feb | -2.8 °C | +0.2 °C | 25 mm | -8 mm |
| Mar | 6.6 °C | +4.1 °C | 89 mm | +30 mm |
| Apr | 11.2 °C | +1.2 °C | 101 mm | +22 mm |
| May | 17.1 °C | -0.5 °C | 62 mm | -21 mm |
| Jun | 24.2 °C | +0.8 °C | 83 mm | -6 mm |
| Jul | 26.8 °C | +0.8 °C | 125 mm | +45 mm |
| Aug | 24.4 °C | -0.4 °C | 88 mm | +4 mm |
| Sep | 22.0 °C | +1.6 °C | 42 mm | -32 mm |
| Oct | 16.5 °C | +2.7 °C | 43 mm | -22 mm |
| Nov | 6.7 °C | +1.2 °C | 39 mm | -18 mm |
| Dec | -2.8 °C | -1.1 °C | 47 mm | +4 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 Oshkosh?
Oshkosh has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 7.7 °C and it receives 785 mm of precipitation per year.
What is the hottest day ever recorded in Oshkosh?
The hottest day measured in Oshkosh between 1940 and 2025 was 5 July 2012, reaching 35.7 °C.
What is the coldest day in Oshkosh?
The coldest day measured in Oshkosh between 1940 and 2025 was 30 January 1951, at -31.3 °C.
Does it snow in Oshkosh?
Yes. Oshkosh gets on average 94.0 cm of snow per year and has around 133 frost days.
Has the climate of Oshkosh warmed?
Yes: Oshkosh warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Oshkosh?
The wettest day measured in Oshkosh between 1940 and 2025 was 22 June 1990, with 87 mm of rain in 24 hours.
What was the windiest day in Oshkosh?
The windiest day measured in Oshkosh between 1940 and 2025 was 11 November 1940, with winds reaching 66.2 km/h.
What is the warmest month in Oshkosh?
The warmest month in Oshkosh is July (22.1 °C on average); the coldest is January (-8.0 °C).
How much does it rain in Oshkosh?
Oshkosh receives on average 785 mm of precipitation per year, spread over about 110 rainy days.
Is it sunny in Oshkosh?
Oshkosh gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Oshkosh?
The heaviest 24-hour snowfall measured in Oshkosh between 1940 and 2025 was 1 December 1985, with 25.7 cm.
Are there tropical nights in Oshkosh?
Yes: Oshkosh has on average 22 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Oshkosh?
In Oshkosh, between 1940 and 2025, the highest apparent temperature reached 40.5 °C on 4 July 2012, and the lowest was -39.4 °C on 10 January 1982.
Compare Oshkosh with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Oshkosh