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Weather extremes

How extreme does Asahikawa's weather get?

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

🔥 Hottest day
99°F Jul 31, 2021

That is about 20°F hotter than a normal July afternoon in Asahikawa (typical high near 79°F).

The three most extreme on record

1 99°F Jul 31, 2021recent
2 98°F Aug 7, 2021
3 96°F Jul 28, 2021
❄️ Coldest night
-14°F Jan 19, 2008

About 24°F colder than a normal January night in Asahikawa (typical low near 9°F).

The three most extreme on record

1 -14°F Jan 19, 2008
2 -14°F Feb 9, 2020
3 -14°F Jan 15, 2001
🌧️ Most rain in one day
7.52 in Aug 17, 1994

More rain in a single day than Asahikawa usually gets in the whole month of August (typical August total about 6.3 in).

The three most extreme on record

1 7.52 in Aug 17, 1994
2 5.87 in Aug 21, 2016
3 5.67 in Jul 3, 2018

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 99°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Asahikawa's record heat sits well above even a hot day for the season — July's 99°F is about 20°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, Asahikawa'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 99°F and as low as −14°F. A single day has delivered over 8 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 Asahikawa, about 2 km from the city centre.

How we build these numbers →