Forest Hills climate — normals and trends
Forest Hills (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 923 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 (-5.1 °C). Rainfall peaks in May.
Forest Hills averages 130 frost days, 16 hot days (≥ 30 °C) and 126 rainy days per year.
Forest Hills has warmed by +2.2 °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 145 to 115 per year over the period.
The hottest day of the period reached 37.8 °C (on 20 June 1953) and the coldest -32.4 °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
Forest HillsMichigan
- coords
- 42.96°, -85.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.8°C
Average daily high
13.5°C
Average daily low
4.1°C
Annual rainfall
923mm
Sunshine / day
8.3h
Mean relative humidity
72%
Average peak wind
18.2km/h
Seasonal range
26.9°C
Frost days (< 0 °C)
130 d/yr
Hot days (≥ 30 °C)
16 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
96.6 cm
Average feels-like high
11.3 °C
Average feels-like low
1.1 °C
Average peak gust
39.2 km/h
Tropical nights (≥ 20 °C)
14 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.44 · 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
37.8 °C
20 June 1953
Coldest day
-32.4 °C
3 February 1996
Wettest day
71 mm
13 September 2008
Windiest day
55.2 km/h
6 April 1979
Strongest gust
109.1 km/h
10 December 1971
Hottest feels-like
42.3 °C
6 July 2012
Coldest feels-like
-38.2 °C
3 February 1996
Snowiest day
29.1 cm
26 January 1978
Sunniest day
14.9 h
14 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 | -2.4 °C | -0.9 °C | 31 mm | -25 mm |
| Feb | -0.7 °C | -0.8 °C | 31 mm | -17 mm |
| Mar | 11.2 °C | +5.1 °C | 96 mm | +27 mm |
| Apr | 15.1 °C | +1.4 °C | 69 mm | -23 mm |
| May | 19.4 °C | -0.6 °C | 115 mm | +19 mm |
| Jun | 27.0 °C | +2.0 °C | 120 mm | +26 mm |
| Jul | 28.3 °C | +1.2 °C | 84 mm | -7 mm |
| Aug | 26.8 °C | +0.8 °C | 58 mm | -29 mm |
| Sep | 24.6 °C | +2.6 °C | 34 mm | -46 mm |
| Oct | 17.7 °C | +2.3 °C | 81 mm | +5 mm |
| Nov | 7.5 °C | 0.0 °C | 48 mm | -24 mm |
| Dec | 0.3 °C | -0.8 °C | 70 mm | +9 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 Forest Hills?
Forest Hills has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 923 mm of precipitation per year.
What is the hottest day ever recorded in Forest Hills?
The hottest day measured in Forest Hills between 1940 and 2025 was 20 June 1953, reaching 37.8 °C.
What is the coldest day in Forest Hills?
The coldest day measured in Forest Hills between 1940 and 2025 was 3 February 1996, at -32.4 °C.
Does it snow in Forest Hills?
Yes. Forest Hills gets on average 96.6 cm of snow per year and has around 130 frost days.
Has the climate of Forest Hills warmed?
Yes: Forest Hills warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Forest Hills?
The wettest day measured in Forest Hills between 1940 and 2025 was 13 September 2008, with 71 mm of rain in 24 hours.
What was the windiest day in Forest Hills?
The windiest day measured in Forest Hills between 1940 and 2025 was 6 April 1979, with winds reaching 55.2 km/h.
What is the warmest month in Forest Hills?
The warmest month in Forest Hills is July (21.8 °C on average); the coldest is January (-5.1 °C).
How much does it rain in Forest Hills?
Forest Hills receives on average 923 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Forest Hills?
Forest Hills gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Forest Hills?
The heaviest 24-hour snowfall measured in Forest Hills between 1940 and 2025 was 26 January 1978, with 29.1 cm.
Are there tropical nights in Forest Hills?
Yes: Forest Hills has on average 14 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Forest Hills?
In Forest Hills, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 6 July 2012, and the lowest was -38.2 °C on 3 February 1996.
Compare Forest Hills with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Forest Hills