Rock Forest climate — normals and trends
Rock Forest (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.5 °C and it receives 1,175 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 (19.1 °C on average) and the coldest is January (-9.7 °C). Rainfall peaks in June.
Rock Forest averages 159 frost days, 2 hot days (≥ 30 °C) and 162 rainy days per year.
Rock Forest has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 169 to 149 per year over the period.
The hottest day of the period reached 33.9 °C (on 24 June 2025) and the coldest -35.9 °C (on 15 January 1965).
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
Rock ForestQuebec
- coords
- 45.36°, -72.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.5°C
Average daily high
10.0°C
Average daily low
0.8°C
Annual rainfall
1,175mm
Sunshine / day
7.9h
Mean relative humidity
75%
Average peak wind
16.6km/h
Seasonal range
28.8°C
Frost days (< 0 °C)
159 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
162 d/yr
Annual snowfall
191.3 cm
Average feels-like high
7.5 °C
Average feels-like low
-2.6 °C
Average peak gust
39.1 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
12.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.35 · 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
33.9 °C
24 June 2025
Coldest day
-35.9 °C
15 January 1965
Wettest day
91 mm
28 August 2011
Windiest day
47.7 km/h
25 February 1965
Strongest gust
128.9 km/h
23 December 2022
Hottest feels-like
39.5 °C
2 August 1975
Coldest feels-like
-40.9 °C
15 January 1957
Snowiest day
30.2 cm
7 March 2011
Sunniest day
15.2 h
22 June 1952
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 | -5.9 °C | -0.6 °C | 59 mm | -14 mm |
| Feb | -4.9 °C | -1.2 °C | 84 mm | +17 mm |
| Mar | 4.9 °C | +3.2 °C | 100 mm | +19 mm |
| Apr | 10.7 °C | +1.4 °C | 116 mm | +23 mm |
| May | 16.8 °C | -0.2 °C | 163 mm | +55 mm |
| Jun | 22.9 °C | +1.4 °C | 99 mm | -23 mm |
| Jul | 25.1 °C | +1.3 °C | 89 mm | -32 mm |
| Aug | 24.1 °C | +1.5 °C | 53 mm | -65 mm |
| Sep | 21.0 °C | +2.5 °C | 49 mm | -54 mm |
| Oct | 14.3 °C | +2.3 °C | 94 mm | -8 mm |
| Nov | 2.8 °C | -1.8 °C | 122 mm | +24 mm |
| Dec | -3.8 °C | -1.4 °C | 94 mm | +6 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 Rock Forest?
Rock Forest has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.5 °C and it receives 1,175 mm of precipitation per year.
What is the hottest day ever recorded in Rock Forest?
The hottest day measured in Rock Forest between 1940 and 2025 was 24 June 2025, reaching 33.9 °C.
What is the coldest day in Rock Forest?
The coldest day measured in Rock Forest between 1940 and 2025 was 15 January 1965, at -35.9 °C.
Does it snow in Rock Forest?
Yes. Rock Forest gets on average 191.3 cm of snow per year and has around 159 frost days.
Has the climate of Rock Forest warmed?
Yes: Rock Forest warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rock Forest?
The wettest day measured in Rock Forest between 1940 and 2025 was 28 August 2011, with 91 mm of rain in 24 hours.
What was the windiest day in Rock Forest?
The windiest day measured in Rock Forest between 1940 and 2025 was 25 February 1965, with winds reaching 47.7 km/h.
What is the warmest month in Rock Forest?
The warmest month in Rock Forest is July (19.1 °C on average); the coldest is January (-9.7 °C).
How much does it rain in Rock Forest?
Rock Forest receives on average 1,175 mm of precipitation per year, spread over about 162 rainy days.
Is it sunny in Rock Forest?
Rock Forest gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.
What is the biggest single-day snowfall in Rock Forest?
The heaviest 24-hour snowfall measured in Rock Forest between 1940 and 2025 was 7 March 2011, with 30.2 cm.
Are there tropical nights in Rock Forest?
Yes: Rock Forest has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rock Forest?
In Rock Forest, between 1940 and 2025, the highest apparent temperature reached 39.5 °C on 2 August 1975, and the lowest was -40.9 °C on 15 January 1957.
Compare Rock Forest with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rock Forest