Warren climate — normals and trends
Warren (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 827 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 (22.8 °C on average) and the coldest is January (-4.3 °C). Rainfall peaks in May.
Warren averages 117 frost days, 18 hot days (≥ 30 °C) and 119 rainy days per year.
Warren 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 131 to 103 per year over the period.
The hottest day of the period reached 39.6 °C (on 25 June 1988) and the coldest -27.7 °C (on 16 January 1994).
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
WarrenMichigan
- coords
- 42.49°, -83.01°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
13.8°C
Average daily low
5.3°C
Annual rainfall
827mm
Sunshine / day
8.7h
Mean relative humidity
71%
Average peak wind
19.8km/h
Seasonal range
27.1°C
Frost days (< 0 °C)
117 d/yr
Hot days (≥ 30 °C)
18 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
76.8 cm
Average feels-like high
11.5 °C
Average feels-like low
2.3 °C
Average peak gust
39.5 km/h
Tropical nights (≥ 20 °C)
24 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.38 · 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
39.6 °C
25 June 1988
Coldest day
-27.7 °C
16 January 1994
Wettest day
118 mm
25 June 1968
Windiest day
56.1 km/h
15 March 1959
Strongest gust
108.0 km/h
15 March 1959
Hottest feels-like
44.4 °C
14 July 1995
Coldest feels-like
-33.7 °C
19 January 1994
Snowiest day
23.4 cm
25 March 1947
Sunniest day
15.0 h
3 June 1940
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 | -1.9 °C | -1.0 °C | 39 mm | -15 mm |
| Feb | -0.3 °C | -0.7 °C | 51 mm | +0 mm |
| Mar | 10.8 °C | +4.9 °C | 68 mm | +2 mm |
| Apr | 14.8 °C | +1.6 °C | 78 mm | -6 mm |
| May | 18.4 °C | -1.4 °C | 82 mm | -3 mm |
| Jun | 26.6 °C | +1.4 °C | 100 mm | +17 mm |
| Jul | 28.5 °C | +1.0 °C | 106 mm | +31 mm |
| Aug | 25.9 °C | -0.5 °C | 33 mm | -39 mm |
| Sep | 24.2 °C | +1.9 °C | 47 mm | -19 mm |
| Oct | 17.7 °C | +2.1 °C | 62 mm | -3 mm |
| Nov | 8.1 °C | 0.0 °C | 39 mm | -29 mm |
| Dec | 1.2 °C | -0.5 °C | 80 mm | +20 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 Warren?
Warren has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 827 mm of precipitation per year.
What is the hottest day ever recorded in Warren?
The hottest day measured in Warren between 1940 and 2025 was 25 June 1988, reaching 39.6 °C.
What is the coldest day in Warren?
The coldest day measured in Warren between 1940 and 2025 was 16 January 1994, at -27.7 °C.
Does it snow in Warren?
Yes. Warren gets on average 76.8 cm of snow per year and has around 117 frost days.
Has the climate of Warren warmed?
Yes: Warren warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Warren?
The wettest day measured in Warren between 1940 and 2025 was 25 June 1968, with 118 mm of rain in 24 hours.
What was the windiest day in Warren?
The windiest day measured in Warren between 1940 and 2025 was 15 March 1959, with winds reaching 56.1 km/h.
What is the warmest month in Warren?
The warmest month in Warren is July (22.8 °C on average); the coldest is January (-4.3 °C).
How much does it rain in Warren?
Warren receives on average 827 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Warren?
Warren 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 Warren?
The heaviest 24-hour snowfall measured in Warren between 1940 and 2025 was 25 March 1947, with 23.4 cm.
Are there tropical nights in Warren?
Yes: Warren has on average 24 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Warren?
In Warren, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 14 July 1995, and the lowest was -33.7 °C on 19 January 1994.
Compare Warren with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Warren