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Weather extremes

How extreme does Côte-Saint-Luc's weather get?

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

Based on 32 years of daily weather observations (1994–present), from the Mctavish 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 Côte-Saint-Luc has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
98°F Jul 2, 2018

That is about 18°F hotter than a normal July afternoon in Côte-Saint-Luc (typical high near 80°F).

The three most extreme on record

1 98°F Jul 2, 2018
2 97°F May 27, 2020
3 96°F Aug 8, 2001
❄️ Coldest night
-21°F Feb 4, 2023

About 34°F colder than a normal February night in Côte-Saint-Luc (typical low near 13°F).

The three most extreme on record

1 -21°F Feb 4, 2023recent
2 -19°F Jan 14, 2004
3 -18°F Jan 14, 1999
🌧️ Most rain in one day
4.05 in Nov 8, 1996

More rain in a single day than Côte-Saint-Luc usually gets in the whole month of November (typical November total about 3.4 in).

The three most extreme on record

1 4.05 in Nov 8, 1996
2 3.73 in Aug 31, 2005
3 3.54 in Oct 7, 2023

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.

-50°-30°-10°10°30°50°70°90°110° all-time high 98°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Côte-Saint-Luc's record heat sits well above even a hot day for the season — July's 98°F is about 18°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, Côte-Saint-Luc's warmest days reach the low 80s°F and its coldest nights drop to the low 10s°F. But across the record it has gone as high as 98°F and as low as −21°F. A single day has delivered over 4 inches of rain. 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 22 years of daily observations at Montreal/pierre Elliott Trudeau Intl A, a weather station, about 7 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →