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Weather extremes

How extreme does Masuda's weather get?

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

Based on 31 years of daily weather observations (1994–present), from the Iwami station 6 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 Masuda has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
99°F Aug 12, 1994

That is about 13°F hotter than a normal August afternoon in Masuda (typical high near 86°F).

The three most extreme on record

1 99°F Aug 12, 1994
2 97°F Aug 10, 1994
3 97°F Aug 11, 1994
❄️ Coldest night
23°F Jan 24, 1998

About 14°F colder than a normal January night in Masuda (typical low near 37°F).

The three most extreme on record

1 23°F Jan 24, 1998
2 23°F Jan 29, 2003
3 23°F Jan 24, 2016

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

Masuda's record heat sits well above even a hot day for the season — August's 99°F is about 13°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, Masuda's warmest days reach the mid-80s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 99°F and as low as 23°F. 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 Masuda, about 2 km from the city centre.

How we build these numbers →