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Weather extremes

How extreme does Kobayashi's weather get?

The hottest, coldest, wettest and snowiest days Kobayashi 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 Miyakonojo station 29 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 Kobayashi has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
103°F Aug 18, 2020

That is about 13°F hotter than a normal August afternoon in Kobayashi (typical high near 90°F).

The three most extreme on record

1 103°F Aug 18, 2020
2 103°F Aug 17, 2020
3 100°F Aug 4, 2024
❄️ Coldest night
19°F Jan 25, 2016

About 13°F colder than a normal January night in Kobayashi (typical low near 32°F).

The three most extreme on record

1 19°F Jan 25, 2016
2 19°F Feb 11, 1996
3 19°F Jan 24, 2016
🌧️ Most rain in one day
11.38 in Sep 16, 1997

More rain in a single day than Kobayashi usually gets in the whole month of September (typical September total about 11.1 in).

The three most extreme on record

1 11.38 in Sep 16, 1997
2 10.91 in Aug 1, 1993
3 10.87 in Aug 9, 2023

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

Kobayashi's record heat sits well above even a hot day for the season — August's 103°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, Kobayashi'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 19°F. A single day has delivered over 11 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 Kobayashi, about 3 km from the city centre.

How we build these numbers →