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Weather extremes

How extreme does Morioka's weather get?

The hottest, coldest, wettest and snowiest days Morioka 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 Morioka station 1 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 Morioka has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
99°F Aug 3, 2025

That is about 16°F hotter than a normal August afternoon in Morioka (typical high near 83°F).

The three most extreme on record

1 99°F Aug 3, 2025recent
2 98°F Jul 29, 2025
3 98°F Aug 14, 2007
❄️ Coldest night
6°F Jan 14, 2001

About 15°F colder than a normal January night in Morioka (typical low near 21°F).

The three most extreme on record

1 6°F Jan 14, 2001
2 6°F Jan 17, 2001
3 7°F Jan 13, 2001
🌧️ Most rain in one day
4.57 in Aug 27, 2024

About 64% of a typical August's rain in a single day (Morioka averages roughly 7.1 in across the month).

The three most extreme on record

1 4.57 in Aug 27, 2024recent
2 4.55 in Sep 18, 2007
3 4.51 in Jul 23, 2017

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.

-10°10°30°50°70°90°110° all-time high 99°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Morioka's record heat sits well above even a hot day for the season — August's 99°F is about 16°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, Morioka's warmest days reach the low 80s°F and its coldest nights drop to the low 20s°F. But across the record it has gone as high as 99°F and as low as 6°F. A single day has delivered over 5 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 Morioka, about 1 km from the city centre.

How we build these numbers →