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Weather extremes

How extreme does Toyooka's weather get?

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

🔥 Hottest day
103°F Aug 5, 2023

That is about 12°F hotter than a normal August afternoon in Toyooka (typical high near 91°F).

The three most extreme on record

1 103°F Aug 5, 2023recent
2 103°F Jul 22, 2000
3 102°F Aug 22, 2018
❄️ Coldest night
20°F Jan 26, 2016

About 12°F colder than a normal January night in Toyooka (typical low near 32°F).

The three most extreme on record

1 20°F Jan 26, 2016
2 20°F Jan 25, 2016
3 20°F Jan 26, 2023
🌧️ Most rain in one day
6.77 in Sep 21, 2011

About 67% of a typical September's rain in a single day (Toyooka averages roughly 10.0 in across the month).

The three most extreme on record

1 6.77 in Sep 21, 2011
2 6.14 in Aug 15, 2023
3 6.08 in Jul 19, 2006

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°130° all-time high 103°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Toyooka's record heat sits well above even a hot day for the season — August's 103°F is about 12°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, Toyooka's warmest days reach the low 90s°F and its coldest nights drop to the low 30s°F. But across the record it has gone as high as 103°F and as low as 20°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 Toyooka, inside the city.

How we build these numbers →