Whitehorse climate — normals and trends
Whitehorse (Canada) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is -2.2 °C and it receives 396 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 (13.1 °C on average) and the coldest is January (-19.0 °C). Rainfall peaks in August.
Whitehorse averages 231 frost days, 0 hot days (≥ 30 °C) and 103 rainy days per year.
Whitehorse has warmed by +3.2 °C between 1940 and 2025, or +0.37 °C per decade. This trend is statistically significant.
The number of frost days there went from about 246 to 216 per year over the period.
The hottest day of the period reached 31.8 °C (on 30 July 2009) and the coldest -53.2 °C (on 15 December 1964).
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
WhitehorseYukon
- coords
- 60.72°, -135.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-2.2°C
Average daily high
2.2°C
Average daily low
-6.5°C
Annual rainfall
396mm
Sunshine / day
8.8h
Mean relative humidity
72%
Average peak wind
10.9km/h
Seasonal range
32.1°C
Frost days (< 0 °C)
231 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
103 d/yr
Annual snowfall
135.7 cm
Average feels-like high
-1.5 °C
Average feels-like low
-10.3 °C
Average peak gust
32.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.2 °C
since 1940
+0.4 °C per decade · r² = 0.38 · 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
31.8 °C
30 July 2009
Coldest day
-53.2 °C
15 December 1964
Wettest day
31 mm
11 August 2011
Windiest day
27.4 km/h
3 February 2012
Strongest gust
86.4 km/h
14 November 2009
Hottest feels-like
31.3 °C
29 July 2009
Coldest feels-like
-58.0 °C
15 December 1964
Snowiest day
21.1 cm
10 December 1943
Sunniest day
18.1 h
13 June 2009
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 | -8.5 °C | +7.4 °C | 29 mm | +5 mm |
| Feb | -10.2 °C | +0.2 °C | 12 mm | -6 mm |
| Mar | -0.1 °C | +3.4 °C | 8 mm | -9 mm |
| Apr | 6.2 °C | +2.3 °C | 16 mm | -1 mm |
| May | 10.6 °C | -0.1 °C | 27 mm | +1 mm |
| Jun | 17.4 °C | +1.1 °C | 22 mm | -21 mm |
| Jul | 19.4 °C | +1.2 °C | 75 mm | +26 mm |
| Aug | 19.6 °C | +3.2 °C | 41 mm | -10 mm |
| Sep | 14.3 °C | +3.9 °C | 44 mm | -6 mm |
| Oct | 5.6 °C | +3.3 °C | 43 mm | -2 mm |
| Nov | -4.1 °C | +4.2 °C | 35 mm | +5 mm |
| Dec | -24.9 °C | -10.7 °C | 70 mm | +43 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 Whitehorse?
Whitehorse has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is -2.2 °C and it receives 396 mm of precipitation per year.
What is the hottest day ever recorded in Whitehorse?
The hottest day measured in Whitehorse between 1940 and 2025 was 30 July 2009, reaching 31.8 °C.
What is the coldest day in Whitehorse?
The coldest day measured in Whitehorse between 1940 and 2025 was 15 December 1964, at -53.2 °C.
Does it snow in Whitehorse?
Yes. Whitehorse gets on average 135.7 cm of snow per year and has around 231 frost days.
Has the climate of Whitehorse warmed?
Yes: Whitehorse warmed by +3.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Whitehorse?
The wettest day measured in Whitehorse between 1940 and 2025 was 11 August 2011, with 31 mm of rain in 24 hours.
What was the windiest day in Whitehorse?
The windiest day measured in Whitehorse between 1940 and 2025 was 3 February 2012, with winds reaching 27.4 km/h.
What is the warmest month in Whitehorse?
The warmest month in Whitehorse is July (13.1 °C on average); the coldest is January (-19.0 °C).
How much does it rain in Whitehorse?
Whitehorse receives on average 396 mm of precipitation per year, spread over about 103 rainy days.
Is it sunny in Whitehorse?
Whitehorse gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Whitehorse?
The heaviest 24-hour snowfall measured in Whitehorse between 1940 and 2025 was 10 December 1943, with 21.1 cm.
Are there tropical nights in Whitehorse?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Whitehorse.
What was the most extreme apparent temperature in Whitehorse?
In Whitehorse, between 1940 and 2025, the highest apparent temperature reached 31.3 °C on 29 July 2009, and the lowest was -58.0 °C on 15 December 1964.
Compare Whitehorse with another city
Pick a second city: its normals will be set against these, indicator by indicator.