Beaver Dam climate — normals and trends
Beaver Dam (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.8 °C and it receives 826 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 (21.8 °C on average) and the coldest is January (-8.0 °C). Rainfall peaks in June.
Beaver Dam averages 140 frost days, 15 hot days (≥ 30 °C) and 113 rainy days per year.
Beaver Dam has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 151 to 129 per year over the period.
The hottest day of the period reached 38.5 °C (on 14 July 1995) and the coldest -34.6 °C (on 15 January 1963).
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
Beaver DamWisconsin
- coords
- 43.46°, -88.84°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.8°C
Average daily high
12.5°C
Average daily low
3.2°C
Annual rainfall
826mm
Sunshine / day
8.7h
Mean relative humidity
72%
Average peak wind
19.9km/h
Seasonal range
29.8°C
Frost days (< 0 °C)
140 d/yr
Hot days (≥ 30 °C)
15 d/yr
Rainy days (≥ 1 mm)
113 d/yr
Annual snowfall
92.2 cm
Average feels-like high
10.0 °C
Average feels-like low
-0.1 °C
Average peak gust
38.4 km/h
Tropical nights (≥ 20 °C)
14 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.38 · 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
38.5 °C
14 July 1995
Coldest day
-34.6 °C
15 January 1963
Wettest day
85 mm
13 September 1961
Windiest day
57.0 km/h
30 April 1984
Strongest gust
113.0 km/h
16 December 2021
Hottest feels-like
42.8 °C
13 July 1995
Coldest feels-like
-40.1 °C
15 January 1963
Snowiest day
24.5 cm
20 December 2012
Sunniest day
14.9 h
14 June 2024
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 | -2.9 °C | +1.2 °C | 3 mm | -36 mm |
| Feb | -1.8 °C | 0.0 °C | 25 mm | -10 mm |
| Mar | 10.1 °C | +5.4 °C | 88 mm | +26 mm |
| Apr | 13.6 °C | +0.8 °C | 92 mm | +4 mm |
| May | 18.7 °C | -0.7 °C | 74 mm | -16 mm |
| Jun | 25.9 °C | +1.2 °C | 94 mm | -1 mm |
| Jul | 27.6 °C | +0.8 °C | 105 mm | +18 mm |
| Aug | 25.4 °C | -0.4 °C | 101 mm | +16 mm |
| Sep | 23.8 °C | +2.2 °C | 43 mm | -34 mm |
| Oct | 17.4 °C | +2.4 °C | 34 mm | -32 mm |
| Nov | 7.5 °C | +1.3 °C | 46 mm | -11 mm |
| Dec | -2.4 °C | -1.2 °C | 48 mm | +3 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 Beaver Dam?
Beaver Dam has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.8 °C and it receives 826 mm of precipitation per year.
What is the hottest day ever recorded in Beaver Dam?
The hottest day measured in Beaver Dam between 1940 and 2025 was 14 July 1995, reaching 38.5 °C.
What is the coldest day in Beaver Dam?
The coldest day measured in Beaver Dam between 1940 and 2025 was 15 January 1963, at -34.6 °C.
Does it snow in Beaver Dam?
Yes. Beaver Dam gets on average 92.2 cm of snow per year and has around 140 frost days.
Has the climate of Beaver Dam warmed?
Yes: Beaver Dam warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Beaver Dam?
The wettest day measured in Beaver Dam between 1940 and 2025 was 13 September 1961, with 85 mm of rain in 24 hours.
What was the windiest day in Beaver Dam?
The windiest day measured in Beaver Dam between 1940 and 2025 was 30 April 1984, with winds reaching 57.0 km/h.
What is the warmest month in Beaver Dam?
The warmest month in Beaver Dam is July (21.8 °C on average); the coldest is January (-8.0 °C).
How much does it rain in Beaver Dam?
Beaver Dam receives on average 826 mm of precipitation per year, spread over about 113 rainy days.
Is it sunny in Beaver Dam?
Beaver Dam gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Beaver Dam?
The heaviest 24-hour snowfall measured in Beaver Dam between 1940 and 2025 was 20 December 2012, with 24.5 cm.
Are there tropical nights in Beaver Dam?
Yes: Beaver Dam has on average 14 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Beaver Dam?
In Beaver Dam, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 13 July 1995, and the lowest was -40.1 °C on 15 January 1963.
Compare Beaver Dam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Beaver Dam