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Weather extremes

How extreme does Sankt Gallen's weather get?

The hottest, coldest, wettest and snowiest days Sankt Gallen 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 Konstanz station 31 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 Sankt Gallen has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
98°F Jul 28, 2013

That is about 20°F hotter than a normal July afternoon in Sankt Gallen (typical high near 78°F).

The three most extreme on record

1 98°F Jul 28, 2013
2 98°F Jul 4, 2015
3 98°F Jul 31, 2018
❄️ Coldest night
-2°F Jan 12, 1987

About 32°F colder than a normal January night in Sankt Gallen (typical low near 30°F).

The three most extreme on record

1 -2°F Jan 12, 1987
2 -1°F Jan 9, 1985
3 1°F Jan 13, 1987
🌧️ Most rain in one day
3.33 in Aug 26, 2022

About 87% of a typical August's rain in a single day (Sankt Gallen averages roughly 3.8 in across the month).

The three most extreme on record

1 3.33 in Aug 26, 2022recent
2 3.20 in Aug 7, 1978
3 3.04 in Aug 11, 1975

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° all-time high 98°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Sankt Gallen's record heat sits well above even a hot day for the season — July's 98°F is about 20°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, Sankt Gallen'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 98°F and as low as −2°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 — the official 1991–2020 climate normals from a national meteorological service, measured at St. Gallen, about 2 km from the city centre.

How we build these numbers →