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Weather extremes

How extreme does Orillia's weather get?

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

Based on 23 years of daily weather observations (2003–present), from the Barrie-Oro station 17 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 Orillia has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
95°F Aug 1, 2006

That is about 18°F hotter than a normal August afternoon in Orillia (typical high near 77°F).

The three most extreme on record

1 95°F Aug 1, 2006
2 93°F Jul 23, 2012
3 93°F Jul 1, 2018
❄️ Coldest night
-32°F Dec 20, 2004

About 49°F colder than a normal December night in Orillia (typical low near 17°F).

The three most extreme on record

1 -32°F Dec 20, 2004
2 -32°F Jan 22, 2014
3 -28°F Jan 9, 2004
🌧️ Most rain in one day
3.21 in Aug 2, 2020

More rain in a single day than Orillia usually gets in the whole month of August (typical August total about 2.7 in).

The three most extreme on record

1 3.21 in Aug 2, 2020
2 2.43 in Jul 29, 2011
3 2.32 in Jun 27, 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 95°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Orillia's record heat sits well above even a hot day for the season — August's 95°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, Orillia's warmest days reach the high 70s°F and its coldest nights drop to the high 0s°F. But across the record it has gone as high as 95°F and as low as −32°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 25 years of daily observations at Coldwater Warminster, a weather station, about 10 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →