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Weather extremes

How extreme does Rouen's weather get?

The hottest, coldest, wettest and snowiest days Rouen has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1973–present), from the Vallee De Seine station 9 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 Rouen has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
106°F Jul 25, 2019

That is about 32°F hotter than a normal July afternoon in Rouen (typical high near 74°F).

The three most extreme on record

1 106°F Jul 25, 2019
2 102°F Jul 19, 2022
3 101°F Aug 11, 2003
❄️ Coldest night
1°F Jan 17, 1985

About 33°F colder than a normal January night in Rouen (typical low near 34°F).

The three most extreme on record

1 1°F Jan 17, 1985
2 2°F Jan 8, 1985
3 8°F Jan 12, 1987
🌧️ Most rain in one day
4.61 in Dec 15, 1982

More rain in a single day than Rouen usually gets in the whole month of December (typical December total about 3.7 in).

The three most extreme on record

1 4.61 in Dec 15, 1982
2 3.50 in Oct 14, 1982
3 3.41 in Sep 21, 1983

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.

-10°10°30°50°70°90°110°130° all-time high 106°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Rouen's record heat sits well above even a hot day for the season — July's 106°F is about 32°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, Rouen's warmest days reach the mid-70s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 106°F and as low as 1°F. A single day has delivered over 5 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 24 years of daily observations at Vallee DE Seine, a weather station, about 9 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →