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Weather extremes

How extreme does Qazvin's weather get?

The hottest, coldest, wettest and snowiest days Qazvin 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 Ghazvin station 5 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 Qazvin has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
109°F Jul 26, 2014

That is about 13°F hotter than a normal July afternoon in Qazvin (typical high near 96°F).

The three most extreme on record

1 109°F Jul 26, 2014
2 108°F Aug 7, 2024
3 108°F Jul 17, 2003
❄️ Coldest night
-18°F Jan 8, 2008

About 43°F colder than a normal January night in Qazvin (typical low near 25°F).

The three most extreme on record

1 -18°F Jan 8, 2008
2 -15°F Jan 20, 2008
3 -3°F Jan 17, 2008
🌧️ Most rain in one day
4.09 in Jan 16, 1991

More rain in a single day than Qazvin usually gets in the whole month of January (typical January total about 1.2 in).

The three most extreme on record

1 4.09 in Jan 16, 1991
2 4.06 in Jan 6, 2000
3 3.71 in May 11, 1996

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 109°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Qazvin's record heat sits well above even a hot day for the season — July's 109°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, Qazvin's warmest days reach the mid-90s°F and its coldest nights drop to the mid-20s°F. But across the record it has gone as high as 109°F and as low as −18°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 26 years of daily observations at Ghazvin, a weather station, about 5 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →