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Weather extremes

How extreme does Jaworzno's weather get?

The hottest, coldest, wettest and snowiest days Jaworzno 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 Katowice station 17 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 Jaworzno has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
99°F Aug 8, 2013

That is about 23°F hotter than a normal August afternoon in Jaworzno (typical high near 76°F).

The three most extreme on record

1 99°F Aug 8, 2013
2 97°F Aug 29, 1992
3 96°F Aug 10, 1992
❄️ Coldest night
-20°F Jan 23, 2006

About 43°F colder than a normal January night in Jaworzno (typical low near 23°F).

The three most extreme on record

1 -20°F Jan 23, 2006
2 -20°F Jan 7, 2017
3 -17°F Jan 4, 2002
🌧️ Most rain in one day
5.54 in Sep 15, 2024

More rain in a single day than Jaworzno usually gets in the whole month of September (typical September total about 2.9 in).

The three most extreme on record

1 5.54 in Sep 15, 2024recent
2 5.16 in Apr 12, 1994
3 5.12 in Dec 2, 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.

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

Jaworzno's record heat sits well above even a hot day for the season — August's 99°F is about 23°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, Jaworzno's warmest days reach the high 70s°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 −20°F. A single day has delivered over 6 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 Katowice, a weather station, about 17 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →