Allendale climate — normals and trends
Allendale (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.0 °C and it receives 976 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 (-4.2 °C). Rainfall peaks in May.
Allendale averages 114 frost days, 4 hot days (≥ 30 °C) and 132 rainy days per year.
Allendale has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 132 to 96 per year over the period.
The hottest day of the period reached 35.1 °C (on 6 July 2012) and the coldest -27.9 °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
AllendaleMichigan
- coords
- 42.97°, -85.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.0°C
Average daily high
12.4°C
Average daily low
5.6°C
Annual rainfall
976mm
Sunshine / day
8.7h
Mean relative humidity
73%
Average peak wind
22.0km/h
Seasonal range
26.3°C
Frost days (< 0 °C)
114 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
104.9 cm
Average feels-like high
10.1 °C
Average feels-like low
2.2 °C
Average peak gust
39.4 km/h
Tropical nights (≥ 20 °C)
24 d/yr
Solar radiation
14.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °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
35.1 °C
6 July 2012
Coldest day
-27.9 °C
3 February 1996
Wettest day
89 mm
28 June 1945
Windiest day
65.8 km/h
6 April 1979
Strongest gust
108.4 km/h
11 November 1998
Hottest feels-like
40.6 °C
6 July 2012
Coldest feels-like
-33.5 °C
3 February 1996
Snowiest day
28.2 cm
26 January 1978
Sunniest day
14.8 h
23 June 2025
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 | -1.6 °C | -0.2 °C | 43 mm | -20 mm |
| Feb | -1.0 °C | -0.2 °C | 32 mm | -16 mm |
| Mar | 8.8 °C | +4.5 °C | 79 mm | +9 mm |
| Apr | 12.2 °C | +1.4 °C | 69 mm | -25 mm |
| May | 16.8 °C | -0.3 °C | 99 mm | +4 mm |
| Jun | 24.1 °C | +1.1 °C | 101 mm | +13 mm |
| Jul | 26.7 °C | +1.0 °C | 72 mm | -21 mm |
| Aug | 25.4 °C | +0.3 °C | 58 mm | -36 mm |
| Sep | 23.2 °C | +1.9 °C | 30 mm | -57 mm |
| Oct | 16.8 °C | +2.0 °C | 83 mm | -4 mm |
| Nov | 7.5 °C | 0.0 °C | 61 mm | -25 mm |
| Dec | 1.0 °C | -0.6 °C | 79 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 Allendale?
Allendale has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.0 °C and it receives 976 mm of precipitation per year.
What is the hottest day ever recorded in Allendale?
The hottest day measured in Allendale between 1940 and 2025 was 6 July 2012, reaching 35.1 °C.
What is the coldest day in Allendale?
The coldest day measured in Allendale between 1940 and 2025 was 3 February 1996, at -27.9 °C.
Does it snow in Allendale?
Yes. Allendale gets on average 104.9 cm of snow per year and has around 114 frost days.
Has the climate of Allendale warmed?
Yes: Allendale warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Allendale?
The wettest day measured in Allendale between 1940 and 2025 was 28 June 1945, with 89 mm of rain in 24 hours.
What was the windiest day in Allendale?
The windiest day measured in Allendale between 1940 and 2025 was 6 April 1979, with winds reaching 65.8 km/h.
What is the warmest month in Allendale?
The warmest month in Allendale is July (22.1 °C on average); the coldest is January (-4.2 °C).
How much does it rain in Allendale?
Allendale receives on average 976 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Allendale?
Allendale 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 Allendale?
The heaviest 24-hour snowfall measured in Allendale between 1940 and 2025 was 26 January 1978, with 28.2 cm.
Are there tropical nights in Allendale?
Yes: Allendale has on average 24 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Allendale?
In Allendale, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 6 July 2012, and the lowest was -33.5 °C on 3 February 1996.
Compare Allendale with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Allendale