The hottest, coldest, wettest and snowiest days Calais has
recorded — the outer limits of what its weather can do, and how far
they sit beyond a normal day.
Based on 14 years of daily weather observations (2011–present), from the Calais/Dunkerque station 7 km away. Updated through January 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 Calais
has recorded — each shown against what a normal day that time of year
looks like.
🔥Hottest day
104°FJul 19, 2022
The three most extreme on record
1104°FJul 19, 2022recent
2102°FJul 25, 2019
3100°FJul 31, 2020
❄️Coldest night
12°FFeb 11, 2012
The three most extreme on record
112°FFeb 11, 2012
212°FFeb 9, 2012
312°FFeb 10, 2012
🌧️Most rain in one day
3.14 inSep 24, 2022
The three most extreme on record
13.14 inSep 24, 2022recent
21.73 inSep 17, 2016
31.69 inNov 7, 2022
In plain terms
Across the record, Calais has reached as high as 104°F and as low as 12°F. A single day has delivered over 3 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 Boulogne, a weather station, about 30 km from the city centre. The underlying daily records come from NOAA's global station network.