Caledonia climate — normals and trends
Caledonia (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 858 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 (22.7 °C on average) and the coldest is January (-5.6 °C). Rainfall peaks in April.
Caledonia averages 118 frost days, 8 hot days (≥ 30 °C) and 117 rainy days per year.
Caledonia has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 134 to 102 per year over the period.
The hottest day of the period reached 36.9 °C (on 14 July 1995) 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
CaledoniaWisconsin
- coords
- 42.81°, -87.92°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.8°C
Average daily high
12.1°C
Average daily low
5.4°C
Annual rainfall
858mm
Sunshine / day
8.9h
Mean relative humidity
72%
Average peak wind
22.9km/h
Seasonal range
28.3°C
Frost days (< 0 °C)
118 d/yr
Hot days (≥ 30 °C)
8 d/yr
Rainy days (≥ 1 mm)
117 d/yr
Annual snowfall
85.9 cm
Average feels-like high
9.7 °C
Average feels-like low
1.9 °C
Average peak gust
40.1 km/h
Tropical nights (≥ 20 °C)
32 d/yr
Solar radiation
14.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.27 · 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
36.9 °C
14 July 1995
Coldest day
-30.6 °C
3 February 1996
Wettest day
100 mm
13 September 2008
Windiest day
59.4 km/h
11 November 1940
Strongest gust
114.1 km/h
10 November 1998
Hottest feels-like
42.7 °C
13 July 1995
Coldest feels-like
-38.3 °C
20 January 1985
Snowiest day
24.4 cm
1 January 1948
Sunniest day
14.7 h
17 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 | -1.8 °C | +0.6 °C | 9 mm | -43 mm |
| Feb | -0.4 °C | +0.6 °C | 32 mm | -11 mm |
| Mar | 8.8 °C | +4.9 °C | 104 mm | +35 mm |
| Apr | 11.3 °C | +1.4 °C | 57 mm | -38 mm |
| May | 14.3 °C | -1.9 °C | 96 mm | +10 mm |
| Jun | 23.2 °C | +0.3 °C | 87 mm | +4 mm |
| Jul | 25.9 °C | -0.2 °C | 93 mm | +11 mm |
| Aug | 24.4 °C | -1.0 °C | 83 mm | +3 mm |
| Sep | 22.3 °C | +0.9 °C | 54 mm | -21 mm |
| Oct | 16.4 °C | +1.4 °C | 48 mm | -23 mm |
| Nov | 8.2 °C | +1.1 °C | 58 mm | -8 mm |
| Dec | 0.0 °C | -0.7 °C | 66 mm | +8 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 Caledonia?
Caledonia has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 858 mm of precipitation per year.
What is the hottest day ever recorded in Caledonia?
The hottest day measured in Caledonia between 1940 and 2025 was 14 July 1995, reaching 36.9 °C.
What is the coldest day in Caledonia?
The coldest day measured in Caledonia between 1940 and 2025 was 3 February 1996, at -30.6 °C.
Does it snow in Caledonia?
Yes. Caledonia gets on average 85.9 cm of snow per year and has around 118 frost days.
Has the climate of Caledonia warmed?
Yes: Caledonia warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Caledonia?
The wettest day measured in Caledonia between 1940 and 2025 was 13 September 2008, with 100 mm of rain in 24 hours.
What was the windiest day in Caledonia?
The windiest day measured in Caledonia between 1940 and 2025 was 11 November 1940, with winds reaching 59.4 km/h.
What is the warmest month in Caledonia?
The warmest month in Caledonia is July (22.7 °C on average); the coldest is January (-5.6 °C).
How much does it rain in Caledonia?
Caledonia receives on average 858 mm of precipitation per year, spread over about 117 rainy days.
Is it sunny in Caledonia?
Caledonia 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 Caledonia?
The heaviest 24-hour snowfall measured in Caledonia between 1940 and 2025 was 1 January 1948, with 24.4 cm.
Are there tropical nights in Caledonia?
Yes: Caledonia has on average 32 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Caledonia?
In Caledonia, between 1940 and 2025, the highest apparent temperature reached 42.7 °C on 13 July 1995, and the lowest was -38.3 °C on 20 January 1985.
Compare Caledonia with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Caledonia