Stony Plain climate — normals and trends
Stony Plain (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 3.0 °C and it receives 481 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 (17.0 °C on average) and the coldest is January (-12.4 °C). Rainfall peaks in July.
Stony Plain averages 184 frost days, 2 hot days (≥ 30 °C) and 94 rainy days per year.
Stony Plain has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.0 °C (on 30 June 2021) and the coldest -45.0 °C (on 12 January 2024).
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
Stony PlainAlberta
- coords
- 53.53°, -114.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.0°C
Average daily high
8.0°C
Average daily low
-1.9°C
Annual rainfall
481mm
Sunshine / day
9.3h
Mean relative humidity
70%
Average peak wind
17.0km/h
Seasonal range
29.4°C
Frost days (< 0 °C)
184 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
94 d/yr
Annual snowfall
81.8 cm
Average feels-like high
4.7 °C
Average feels-like low
-5.8 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.07 · p = 0.011
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
36.0 °C
30 June 2021
Coldest day
-45.0 °C
12 January 2024
Wettest day
67 mm
13 September 1958
Windiest day
53.5 km/h
30 June 1961
Strongest gust
104.8 km/h
30 June 1961
Hottest feels-like
36.4 °C
10 July 2024
Coldest feels-like
-51.0 °C
12 January 2024
Snowiest day
21.1 cm
19 May 1987
Sunniest day
16.8 h
18 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 | -2.8 °C | +5.4 °C | 30 mm | +9 mm |
| Feb | -9.5 °C | -4.6 °C | 6 mm | -10 mm |
| Mar | 3.0 °C | +2.4 °C | 40 mm | +21 mm |
| Apr | 12.0 °C | +2.5 °C | 18 mm | -11 mm |
| May | 19.2 °C | +2.9 °C | 58 mm | +0 mm |
| Jun | 20.1 °C | +0.5 °C | 59 mm | -25 mm |
| Jul | 22.3 °C | 0.0 °C | 44 mm | -41 mm |
| Aug | 23.8 °C | +2.5 °C | 88 mm | +23 mm |
| Sep | 22.3 °C | +5.8 °C | 6 mm | -37 mm |
| Oct | 12.1 °C | +2.2 °C | 14 mm | -9 mm |
| Nov | 2.2 °C | +2.6 °C | 27 mm | +6 mm |
| Dec | -10.5 °C | -4.1 °C | 61 mm | +42 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 Stony Plain?
Stony Plain has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 3.0 °C and it receives 481 mm of precipitation per year.
What is the hottest day ever recorded in Stony Plain?
The hottest day measured in Stony Plain between 1940 and 2025 was 30 June 2021, reaching 36.0 °C.
What is the coldest day in Stony Plain?
The coldest day measured in Stony Plain between 1940 and 2025 was 12 January 2024, at -45.0 °C.
Does it snow in Stony Plain?
Yes. Stony Plain gets on average 81.8 cm of snow per year and has around 184 frost days.
Has the climate of Stony Plain warmed?
Yes: Stony Plain warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Stony Plain?
The wettest day measured in Stony Plain between 1940 and 2025 was 13 September 1958, with 67 mm of rain in 24 hours.
What was the windiest day in Stony Plain?
The windiest day measured in Stony Plain between 1940 and 2025 was 30 June 1961, with winds reaching 53.5 km/h.
What is the warmest month in Stony Plain?
The warmest month in Stony Plain is July (17.0 °C on average); the coldest is January (-12.4 °C).
How much does it rain in Stony Plain?
Stony Plain receives on average 481 mm of precipitation per year, spread over about 94 rainy days.
Is it sunny in Stony Plain?
Stony Plain gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Stony Plain?
The heaviest 24-hour snowfall measured in Stony Plain between 1940 and 2025 was 19 May 1987, with 21.1 cm.
Are there tropical nights in Stony Plain?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Stony Plain.
What was the most extreme apparent temperature in Stony Plain?
In Stony Plain, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 10 July 2024, and the lowest was -51.0 °C on 12 January 2024.
Compare Stony Plain with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Stony Plain