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Weather extremes

How extreme does Zanjan's weather get?

The hottest, coldest, wettest and snowiest days Zanjan 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 Zanjan station 16 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 Zanjan has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
106°F Aug 6, 2024

That is about 16°F hotter than a normal August afternoon in Zanjan (typical high near 90°F).

The three most extreme on record

1 106°F Aug 6, 2024recent
2 105°F Jul 10, 2015
3 104°F Jul 9, 2010
❄️ Coldest night
-14°F Jan 10, 1992

About 34°F colder than a normal January night in Zanjan (typical low near 20°F).

The three most extreme on record

1 -14°F Jan 10, 1992
2 -13°F Jan 1, 2007
3 -13°F Jan 22, 2011
🌧️ Most rain in one day
9.52 in Aug 19, 2007

More rain in a single day than Zanjan usually gets in the whole month of August (typical August total about 0.5 in).

The three most extreme on record

1 9.52 in Aug 19, 2007
2 3.56 in Jan 28, 2000
3 2.48 in Jun 24, 2010

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

Zanjan's record heat sits well above even a hot day for the season — August's 106°F is about 16°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, Zanjan's warmest days reach the low 90s°F and its coldest nights drop to the low 20s°F. But across the record it has gone as high as 106°F and as low as −14°F. A single day has delivered over 10 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 29 years of daily observations at Zanjan, a weather station, about 16 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →