Sylvan Lake climate — normals and trends
Sylvan Lake (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 3.1 °C and it receives 505 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 (16.4 °C on average) and the coldest is January (-11.3 °C). Rainfall peaks in June.
Sylvan Lake averages 189 frost days, 1 hot days (≥ 30 °C) and 97 rainy days per year.
Sylvan Lake has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.9 °C (on 18 July 1941) and the coldest -42.5 °C (on 13 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
Sylvan LakeAlberta
- coords
- 52.31°, -114.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.1°C
Average daily high
8.4°C
Average daily low
-2.1°C
Annual rainfall
505mm
Sunshine / day
9.3h
Mean relative humidity
70%
Average peak wind
16.3km/h
Seasonal range
27.7°C
Frost days (< 0 °C)
189 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
97 d/yr
Annual snowfall
89.3 cm
Average feels-like high
5.2 °C
Average feels-like low
-5.9 °C
Average peak gust
32.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.13 · 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
34.9 °C
18 July 1941
Coldest day
-42.5 °C
13 January 2024
Wettest day
59 mm
11 June 1990
Windiest day
48.8 km/h
6 September 1984
Strongest gust
105.1 km/h
24 May 2017
Hottest feels-like
35.8 °C
10 July 2024
Coldest feels-like
-47.9 °C
29 January 2008
Snowiest day
35.5 cm
14 May 1986
Sunniest day
16.5 h
19 June 1949
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 | -2.3 °C | +4.3 °C | 21 mm | +2 mm |
| Feb | -8.2 °C | -4.7 °C | 6 mm | -9 mm |
| Mar | 4.2 °C | +2.8 °C | 35 mm | +14 mm |
| Apr | 12.7 °C | +3.3 °C | 40 mm | +6 mm |
| May | 19.3 °C | +3.7 °C | 81 mm | +17 mm |
| Jun | 20.4 °C | +1.4 °C | 79 mm | -10 mm |
| Jul | 21.1 °C | -0.8 °C | 84 mm | +0 mm |
| Aug | 23.6 °C | +2.4 °C | 71 mm | +1 mm |
| Sep | 22.9 °C | +6.5 °C | 6 mm | -40 mm |
| Oct | 12.4 °C | +2.4 °C | 15 mm | -11 mm |
| Nov | 3.4 °C | +2.9 °C | 20 mm | -0 mm |
| Dec | -5.1 °C | -0.2 °C | 36 mm | +18 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 Sylvan Lake?
Sylvan Lake has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 3.1 °C and it receives 505 mm of precipitation per year.
What is the hottest day ever recorded in Sylvan Lake?
The hottest day measured in Sylvan Lake between 1940 and 2025 was 18 July 1941, reaching 34.9 °C.
What is the coldest day in Sylvan Lake?
The coldest day measured in Sylvan Lake between 1940 and 2025 was 13 January 2024, at -42.5 °C.
Does it snow in Sylvan Lake?
Yes. Sylvan Lake gets on average 89.3 cm of snow per year and has around 189 frost days.
Has the climate of Sylvan Lake warmed?
Yes: Sylvan Lake warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sylvan Lake?
The wettest day measured in Sylvan Lake between 1940 and 2025 was 11 June 1990, with 59 mm of rain in 24 hours.
What was the windiest day in Sylvan Lake?
The windiest day measured in Sylvan Lake between 1940 and 2025 was 6 September 1984, with winds reaching 48.8 km/h.
What is the warmest month in Sylvan Lake?
The warmest month in Sylvan Lake is July (16.4 °C on average); the coldest is January (-11.3 °C).
How much does it rain in Sylvan Lake?
Sylvan Lake receives on average 505 mm of precipitation per year, spread over about 97 rainy days.
Is it sunny in Sylvan Lake?
Sylvan Lake 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 Sylvan Lake?
The heaviest 24-hour snowfall measured in Sylvan Lake between 1940 and 2025 was 14 May 1986, with 35.5 cm.
Are there tropical nights in Sylvan Lake?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Sylvan Lake.
What was the most extreme apparent temperature in Sylvan Lake?
In Sylvan Lake, between 1940 and 2025, the highest apparent temperature reached 35.8 °C on 10 July 2024, and the lowest was -47.9 °C on 29 January 2008.
Compare Sylvan Lake with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sylvan Lake