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Weather extremes

How extreme does Whitehorse's weather get?

The hottest, coldest, wettest and snowiest days Whitehorse has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the Whitehorse A station. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Whitehorse has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
93°F May 30, 1983

That is about 35°F hotter than a normal May afternoon in Whitehorse (typical high near 58°F).

The three most extreme on record

1 93°F May 30, 1983
2 92°F Jun 21, 2004
3 92°F Jul 29, 2009
❄️ Coldest night
-57°F Jan 9, 1975

About 54°F colder than a normal January night in Whitehorse (typical low near -3°F).

The three most extreme on record

1 -57°F Jan 9, 1975
2 -56°F Jan 6, 1975
3 -55°F Jan 10, 1975
🌧️ Most rain in one day
1.77 in Jun 27, 1985

More rain in a single day than Whitehorse usually gets in the whole month of June (typical June total about 1.3 in).

The three most extreme on record

1 1.77 in Jun 27, 1985
2 1.13 in Jun 30, 2010
3 1.12 in Aug 5, 1974
Most snow in one day
10.6 in Dec 25, 1980

Close to a whole typical December's snow in one day (Whitehorse averages about 9 in across the month).

The three most extreme on record

1 10.6 in Dec 25, 1980
2 7.1 in Dec 5, 2011
3 6.6 in Feb 9, 1982

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

-70°-50°-30°-10°10°30°50°70°90°110° all-time high 93°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Whitehorse's record heat sits well above even a hot day for the season — May's 93°F is about 35°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Whitehorse's warmest days reach the high 60s°F and its coldest nights drop to the low 0s°F. But across the record it has gone as high as 93°F and as low as −57°F. A single day has delivered over 2 inches of rain or close to 11 inches of snow. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 20 years of daily observations at Whitehorse A, a weather station, about 1 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →