How extreme does Thun's weather get?

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

Based on 20 years of daily weather observations (2005–present), from the Frutigen station 17 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 Thun has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

97°F Jul 27, 2013

The three most extreme on record

1 97°F Jul 27, 2013

2 97°F Jul 24, 2019

3 97°F Jul 11, 2023

❄️ Coldest night

1°F Jan 18, 2016

The three most extreme on record

1 1°F Jan 18, 2016

2 1°F Feb 4, 2012

3 1°F Feb 5, 2012

🌧️ Most rain in one day

2.89 in Apr 17, 2025

The three most extreme on record

1 2.89 in Apr 17, 2025recent

2 2.37 in Jul 26, 2019

3 2.24 in Nov 15, 2023

In plain terms

Across the record, Thun has reached as high as 97°F and as low as 1°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 Interlaken, about 21 km from the city centre.

How we build these numbers →

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