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Weather extremes

How extreme does Repentigny's weather get?

The hottest, coldest, wettest and snowiest days Repentigny 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 L'assomption station 8 km away. Updated through May 2026 — 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 Repentigny has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
97°F Aug 1, 1975

That is about 19°F hotter than a normal August afternoon in Repentigny (typical high near 78°F).

The three most extreme on record

1 97°F Aug 1, 1975
2 97°F Jul 2, 2018
3 97°F May 27, 2020
❄️ Coldest night
-41°F Feb 3, 1971

About 46°F colder than a normal February night in Repentigny (typical low near 5°F).

The three most extreme on record

1 -41°F Feb 3, 1971
2 -40°F Jan 27, 1994
3 -38°F Jan 24, 1976
🌧️ Most rain in one day
4.06 in Jun 19, 1978

More rain in a single day than Repentigny usually gets in the whole month of June (typical June total about 3.8 in).

The three most extreme on record

1 4.06 in Jun 19, 1978
2 3.78 in Sep 9, 2004
3 3.47 in Oct 7, 2023
Most snow in one day
15.6 in Apr 3, 1975

Close to a whole typical April's snow in one day (Repentigny averages about 6 in across the month).

The three most extreme on record

1 15.6 in Apr 3, 1975
2 14.0 in Feb 3, 1972
3 12.9 in Nov 25, 1987

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 97°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Repentigny's record heat sits well above even a hot day for the season — August's 97°F is about 19°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, Repentigny's warmest days reach the low 80s°F and its coldest nights drop to the low 0s°F. But across the record it has gone as high as 97°F and as low as −41°F. A single day has delivered over 4 inches of rain or close to 16 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 28 years of daily observations at Riviere Des Prairies, a weather station, about 6 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →