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Weather extremes

How extreme does Laval's weather get?

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

Based on 34 years of daily weather observations (1991–present), from the Laval-Etronnier station 5 km away. 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 Laval has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
103°F Jul 23, 2019

That is about 26°F hotter than a normal July afternoon in Laval (typical high near 77°F).

The three most extreme on record

1 103°F Jul 23, 2019
2 103°F Jul 18, 2022
3 102°F Aug 10, 2003
❄️ Coldest night
11°F Feb 10, 1991

About 24°F colder than a normal February night in Laval (typical low near 35°F).

The three most extreme on record

1 11°F Feb 10, 1991
2 12°F Feb 11, 2012
3 12°F Feb 7, 1991
🌧️ Most rain in one day
2.72 in Oct 3, 2021

More rain in a single day than Laval usually gets in the whole month of October (typical October total about 2.4 in).

The three most extreme on record

1 2.72 in Oct 3, 2021recent
2 2.12 in Aug 21, 2007
3 1.80 in Nov 14, 2010

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.

-10°10°30°50°70°90°110°130° all-time high 103°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Laval's record heat sits well above even a hot day for the season — July's 103°F is about 26°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, Laval's warmest days reach the high 70s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 103°F and as low as 11°F. A single day has delivered over 3 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 24 years of daily observations at Pontorson, a weather station, about 79 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →