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Weather extremes

How extreme does Niederkassel's weather get?

The hottest, coldest, wettest and snowiest days Niederkassel 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 (1971–present), from the Koln-Bonn station 10 km away. Updated through February 2026 — 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 Niederkassel has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
105°F Jul 25, 2019

That is about 28°F hotter than a normal July afternoon in Niederkassel (typical high near 77°F).

The three most extreme on record

1 105°F Jul 25, 2019
2 103°F Jul 24, 2019
3 103°F Jul 26, 2019
❄️ Coldest night
-10°F Jan 14, 1985

About 42°F colder than a normal January night in Niederkassel (typical low near 32°F).

The three most extreme on record

1 -10°F Jan 14, 1985
2 -9°F Jan 8, 1985
3 -7°F Jan 1, 1979
🌧️ Most rain in one day
4.21 in Jul 14, 2021

More rain in a single day than Niederkassel usually gets in the whole month of July (typical July total about 3.4 in).

The three most extreme on record

1 4.21 in Jul 14, 2021recent
2 2.46 in Aug 21, 2007
3 2.36 in Jun 8, 1997

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 105°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Niederkassel's record heat sits well above even a hot day for the season — July's 105°F is about 28°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, Niederkassel's warmest days reach the high 70s°F and its coldest nights drop to the low 30s°F. But across the record it has gone as high as 105°F and as low as −10°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 30 years of daily observations at Koln-bonn, a weather station, about 10 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →