Climate-Zone.com

HomeCitiesFinlandOuluTools › Weather extremes

Weather extremes

How extreme does Oulu's weather get?

The hottest, coldest, wettest and snowiest days Oulu 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 Oulunsalo Oulun Lentoasema station 11 km away. Updated through March 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 Oulu has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
91°F Jul 29, 2010

That is about 21°F hotter than a normal July afternoon in Oulu (typical high near 70°F).

The three most extreme on record

1 91°F Jul 29, 2010
2 91°F Jul 31, 2025
3 90°F Jul 19, 1988
❄️ Coldest night
-36°F Jan 10, 1987

About 47°F colder than a normal January night in Oulu (typical low near 11°F).

The three most extreme on record

1 -36°F Jan 10, 1987
2 -35°F Feb 13, 1979
3 -35°F Feb 14, 1979
🌧️ Most rain in one day
2.17 in Aug 15, 1992

About 98% of a typical August's rain in a single day (Oulu averages roughly 2.2 in across the month).

The three most extreme on record

1 2.17 in Aug 15, 1992
2 2.14 in Aug 6, 1986
3 1.42 in Jun 26, 1984

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 91°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Oulu's record heat sits well above even a hot day for the season — July's 91°F is about 21°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, Oulu's warmest days reach the low 70s°F and its coldest nights drop to the high 0s°F. But across the record it has gone as high as 91°F and as low as −36°F. A single day has delivered over 2 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 Oulunsalo Oulun Lentoasema, a weather station, about 11 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →