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Weather extremes

How extreme does Wŏnju's weather get?

The hottest, coldest, wettest and snowiest days Wŏnju 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 Wonju station 10 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 Wŏnju has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
106°F Aug 1, 2018

That is about 19°F hotter than a normal August afternoon in Wŏnju (typical high near 86°F).

The three most extreme on record

1 106°F Aug 1, 2018
2 104°F Aug 2, 2018
3 102°F Aug 3, 2018
❄️ Coldest night
-15°F Jan 7, 2021

About 30°F colder than a normal January night in Wŏnju (typical low near 15°F).

The three most extreme on record

1 -15°F Jan 7, 2021recent
2 -11°F Jan 8, 2021
3 -6°F Jan 15, 2001
🌧️ Most rain in one day
13.55 in Aug 7, 2002

More rain in a single day than Wŏnju usually gets in the whole month of August (typical August total about 12.3 in).

The three most extreme on record

1 13.55 in Aug 7, 2002
2 12.60 in Jul 10, 1992
3 11.06 in Sep 2, 1992

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°130° all-time high 106°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Wŏnju's record heat sits well above even a hot day for the season — August's 106°F is about 19°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, Wŏnju's warmest days reach the mid-80s°F and its coldest nights drop to the mid-10s°F. But across the record it has gone as high as 106°F and as low as −15°F. A single day has delivered over 14 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 — 1991–2020 normals computed from 30 years of daily observations at Wonju, a weather station, about 10 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →