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Weather extremes

How extreme does Shawinigan's weather get?

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

Based on 28 years of daily weather observations (1998–present), from the Shawinigan station 1 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 Shawinigan has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
96°F Jul 2, 2002

That is about 18°F hotter than a normal July afternoon in Shawinigan (typical high near 78°F).

The three most extreme on record

1 96°F Jul 2, 2002
2 95°F Jul 3, 2002
3 95°F Jun 24, 2003
❄️ Coldest night
-29°F Jan 15, 2004

About 32°F colder than a normal January night in Shawinigan (typical low near 3°F).

The three most extreme on record

1 -29°F Jan 15, 2004
2 -29°F Jan 16, 2009
3 -27°F Jan 22, 2022
🌧️ Most rain in one day
4.04 in Sep 9, 2004

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

The three most extreme on record

1 4.04 in Sep 9, 2004
2 3.46 in Sep 26, 2005
3 3.24 in Aug 4, 2020

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 96°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Shawinigan's record heat sits well above even a hot day for the season — July's 96°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, Shawinigan's warmest days reach the high 70s°F and its coldest nights drop to the low 0s°F. But across the record it has gone as high as 96°F and as low as −29°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 29 years of daily observations at ST Narcisse, a weather station, about 25 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →