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Weather extremes

How extreme does Kushiro's weather get?

The hottest, coldest, wettest and snowiest days Kushiro 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 Kushiro/Kenebetsu station 2 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 Kushiro has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
92°F Jul 31, 2022

That is about 25°F hotter than a normal July afternoon in Kushiro (typical high near 67°F).

The three most extreme on record

1 92°F Jul 31, 2022recent
2 90°F Jun 26, 2010
3 89°F Jul 28, 2019
❄️ Coldest night
-9°F Feb 13, 2001

About 21°F colder than a normal February night in Kushiro (typical low near 12°F).

The three most extreme on record

1 -9°F Feb 13, 2001
2 -9°F Jan 26, 2000
3 -9°F Jan 27, 2000
🌧️ Most rain in one day
7.13 in Sep 18, 2021

More rain in a single day than Kushiro usually gets in the whole month of September (typical September total about 6.1 in).

The three most extreme on record

1 7.13 in Sep 18, 2021recent
2 6.69 in Sep 16, 2013
3 5.91 in Feb 25, 2014

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.

-30°-10°10°30°50°70°90°110° all-time high 92°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Kushiro's record heat sits well above even a hot day for the season — July's 92°F is about 25°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, Kushiro's warmest days reach the low 70s°F and its coldest nights drop to the low 10s°F. But across the record it has gone as high as 92°F and as low as −9°F. A single day has delivered over 7 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 — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kushiro, about 1 km from the city centre.

How we build these numbers →