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Weather extremes

How extreme does Zalău's weather get?

The hottest, coldest, wettest and snowiest days Zalău 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 Zalau station 2 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 Zalău has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
102°F Aug 11, 1994

That is about 21°F hotter than a normal August afternoon in Zalău (typical high near 81°F).

The three most extreme on record

1 102°F Aug 11, 1994
2 100°F Aug 4, 2017
3 100°F Aug 5, 2017
❄️ Coldest night
-4°F Jan 5, 2002

About 29°F colder than a normal January night in Zalău (typical low near 25°F).

The three most extreme on record

1 -4°F Jan 5, 2002
2 -2°F Jan 8, 2000
3 -1°F Jan 4, 2002
🌧️ Most rain in one day
4.09 in Aug 2, 1997

More rain in a single day than Zalău usually gets in the whole month of August (typical August total about 1.5 in).

The three most extreme on record

1 4.09 in Aug 2, 1997
2 4.02 in Dec 8, 1992
3 4.02 in Nov 8, 1993

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 102°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Zalău's record heat sits well above even a hot day for the season — August's 102°F is about 21°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, Zalău's warmest days reach the low 80s°F and its coldest nights drop to the mid-20s°F. But across the record it has gone as high as 102°F and as low as −4°F. A single day has delivered over 4 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 18 years of daily observations at Zalau, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →