Haslett climate — normals and trends
Haslett (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 870 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 (22.0 °C on average) and the coldest is January (-4.9 °C). Rainfall peaks in May.
Haslett averages 127 frost days, 18 hot days (≥ 30 °C) and 122 rainy days per year.
Haslett has warmed by +2.0 °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 142 to 113 per year over the period.
The hottest day of the period reached 37.5 °C (on 14 July 1995) and the coldest -28.5 °C (on 11 January 1979).
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
HaslettMichigan
- coords
- 42.75°, -84.40°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.0°C
Average daily high
13.7°C
Average daily low
4.4°C
Annual rainfall
870mm
Sunshine / day
8.5h
Mean relative humidity
70%
Average peak wind
18.2km/h
Seasonal range
26.9°C
Frost days (< 0 °C)
127 d/yr
Hot days (≥ 30 °C)
18 d/yr
Rainy days (≥ 1 mm)
122 d/yr
Annual snowfall
90.2 cm
Average feels-like high
11.4 °C
Average feels-like low
1.3 °C
Average peak gust
39.0 km/h
Tropical nights (≥ 20 °C)
16 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
37.5 °C
14 July 1995
Coldest day
-28.5 °C
11 January 1979
Wettest day
71 mm
11 January 2020
Windiest day
53.9 km/h
30 April 1984
Strongest gust
107.3 km/h
30 April 1984
Hottest feels-like
43.0 °C
14 July 1995
Coldest feels-like
-33.8 °C
11 January 1979
Snowiest day
33.6 cm
26 January 1978
Sunniest day
14.9 h
23 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -2.4 °C | -1.2 °C | 38 mm | -18 mm |
| Feb | -0.4 °C | -0.8 °C | 36 mm | -13 mm |
| Mar | 11.7 °C | +5.4 °C | 106 mm | +38 mm |
| Apr | 15.3 °C | +1.6 °C | 75 mm | -13 mm |
| May | 18.9 °C | -1.1 °C | 119 mm | +29 mm |
| Jun | 27.2 °C | +2.0 °C | 124 mm | +36 mm |
| Jul | 28.4 °C | +1.2 °C | 98 mm | +18 mm |
| Aug | 26.3 °C | +0.2 °C | 54 mm | -26 mm |
| Sep | 24.4 °C | +2.2 °C | 50 mm | -22 mm |
| Oct | 17.7 °C | +2.1 °C | 70 mm | -0 mm |
| Nov | 7.6 °C | -0.1 °C | 46 mm | -23 mm |
| Dec | 0.6 °C | -0.7 °C | 75 mm | +15 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 Haslett?
Haslett has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.0 °C and it receives 870 mm of precipitation per year.
What is the hottest day ever recorded in Haslett?
The hottest day measured in Haslett between 1940 and 2025 was 14 July 1995, reaching 37.5 °C.
What is the coldest day in Haslett?
The coldest day measured in Haslett between 1940 and 2025 was 11 January 1979, at -28.5 °C.
Does it snow in Haslett?
Yes. Haslett gets on average 90.2 cm of snow per year and has around 127 frost days.
Has the climate of Haslett warmed?
Yes: Haslett warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Haslett?
The wettest day measured in Haslett between 1940 and 2025 was 11 January 2020, with 71 mm of rain in 24 hours.
What was the windiest day in Haslett?
The windiest day measured in Haslett between 1940 and 2025 was 30 April 1984, with winds reaching 53.9 km/h.
What is the warmest month in Haslett?
The warmest month in Haslett is July (22.0 °C on average); the coldest is January (-4.9 °C).
How much does it rain in Haslett?
Haslett receives on average 870 mm of precipitation per year, spread over about 122 rainy days.
Is it sunny in Haslett?
Haslett gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Haslett?
The heaviest 24-hour snowfall measured in Haslett between 1940 and 2025 was 26 January 1978, with 33.6 cm.
Are there tropical nights in Haslett?
Yes: Haslett has on average 16 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Haslett?
In Haslett, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 14 July 1995, and the lowest was -33.8 °C on 11 January 1979.
Compare Haslett with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Haslett