Clairlea-Birchmount climate — normals and trends
Clairlea-Birchmount (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.9 °C and it receives 926 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 August (20.9 °C on average) and the coldest is February (-4.9 °C). Rainfall peaks in November.
Clairlea-Birchmount averages 112 frost days, 0 hot days (≥ 30 °C) and 128 rainy days per year.
Clairlea-Birchmount has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 125 to 99 per year over the period.
The hottest day of the period reached 31.1 °C (on 9 August 1949) and the coldest -25.7 °C (on 4 January 1981).
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
Clairlea-BirchmountOntario
- coords
- 43.71°, -79.28°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.9°C
Average daily high
10.6°C
Average daily low
5.2°C
Annual rainfall
926mm
Sunshine / day
8.7h
Mean relative humidity
75%
Average peak wind
25.1km/h
Seasonal range
25.8°C
Frost days (< 0 °C)
112 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
99.0 cm
Average feels-like high
7.8 °C
Average feels-like low
1.4 °C
Average peak gust
38.6 km/h
Tropical nights (≥ 20 °C)
19 d/yr
Solar radiation
14.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.25 · 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
31.1 °C
9 August 1949
Coldest day
-25.7 °C
4 January 1981
Wettest day
89 mm
15 October 1954
Windiest day
64.5 km/h
6 April 1979
Strongest gust
102.2 km/h
11 January 2017
Hottest feels-like
35.1 °C
27 July 1955
Coldest feels-like
-33.6 °C
2 February 1976
Snowiest day
23.7 cm
17 January 2022
Sunniest day
15.0 h
24 June 1941
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 | -1.7 °C | -0.3 °C | 37 mm | -36 mm |
| Feb | -1.2 °C | +0.4 °C | 80 mm | +20 mm |
| Mar | 5.1 °C | +3.2 °C | 102 mm | +26 mm |
| Apr | 7.8 °C | +0.8 °C | 68 mm | -18 mm |
| May | 11.8 °C | -0.6 °C | 110 mm | +28 mm |
| Jun | 19.1 °C | +0.5 °C | 55 mm | -19 mm |
| Jul | 24.5 °C | +1.4 °C | 44 mm | -24 mm |
| Aug | 23.5 °C | 0.0 °C | 66 mm | -2 mm |
| Sep | 20.3 °C | +0.3 °C | 38 mm | -44 mm |
| Oct | 15.0 °C | +1.1 °C | 66 mm | -20 mm |
| Nov | 6.7 °C | -0.7 °C | 65 mm | -24 mm |
| Dec | 0.9 °C | -0.9 °C | 93 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 Clairlea-Birchmount?
Clairlea-Birchmount has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.9 °C and it receives 926 mm of precipitation per year.
What is the hottest day ever recorded in Clairlea-Birchmount?
The hottest day measured in Clairlea-Birchmount between 1940 and 2025 was 9 August 1949, reaching 31.1 °C.
What is the coldest day in Clairlea-Birchmount?
The coldest day measured in Clairlea-Birchmount between 1940 and 2025 was 4 January 1981, at -25.7 °C.
Does it snow in Clairlea-Birchmount?
Yes. Clairlea-Birchmount gets on average 99.0 cm of snow per year and has around 112 frost days.
Has the climate of Clairlea-Birchmount warmed?
Yes: Clairlea-Birchmount warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Clairlea-Birchmount?
The wettest day measured in Clairlea-Birchmount between 1940 and 2025 was 15 October 1954, with 89 mm of rain in 24 hours.
What was the windiest day in Clairlea-Birchmount?
The windiest day measured in Clairlea-Birchmount between 1940 and 2025 was 6 April 1979, with winds reaching 64.5 km/h.
What is the warmest month in Clairlea-Birchmount?
The warmest month in Clairlea-Birchmount is August (20.9 °C on average); the coldest is February (-4.9 °C).
How much does it rain in Clairlea-Birchmount?
Clairlea-Birchmount receives on average 926 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Clairlea-Birchmount?
Clairlea-Birchmount 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 Clairlea-Birchmount?
The heaviest 24-hour snowfall measured in Clairlea-Birchmount between 1940 and 2025 was 17 January 2022, with 23.7 cm.
Are there tropical nights in Clairlea-Birchmount?
Yes: Clairlea-Birchmount has on average 19 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Clairlea-Birchmount?
In Clairlea-Birchmount, between 1940 and 2025, the highest apparent temperature reached 35.1 °C on 27 July 1955, and the lowest was -33.6 °C on 2 February 1976.
Compare Clairlea-Birchmount with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Clairlea-Birchmount