Where does the temperature data come from?

From the MeteoSwiss 1 km climate-normals grid ({year}), sampled at the main settlement. This is deliberately not the territorial average, which for Alpine municipalities is far colder because it takes in the high, glaciated terrain — Zermatt's village reads about 3.7 °C, its whole area about −3 °C.

← Canton Appenzell Ausserrhoden overview

Ranking · Data 1991–2020 · Source: BFS

The warmest municipalities in canton Appenzell Ausserrhoden (1991–2020)

National ranking →

Walzenhausen is the warmest municipality in canton Appenzell Ausserrhoden: 10.3 °C annual mean (1991–2020 normals). Next come Heiden (10.2 °C) and Lutzenberg (10.2 °C). Source: MeteoSwiss 1 km climate-normals grid.

Ranking

MeteoSchweiz · 1991–2020

Rank	Municipality	Avg. temp.	Residents
1	Walzenhausen	10.3 °C	2'111
2	Heiden	10.2 °C	4'413
3	Lutzenberg	10.2 °C	1'340
4	Wolfhalden	10.2 °C	1'913
5	Grub	10 °C	986
6	Rehetobel	9.7 °C	1'710
7	Stein	9.2 °C	1'492
8	Speicher	9.1 °C	4'505
9	Teufen	9 °C	6'646
10	Herisau	8.9 °C	16'100
11	Hundwil	8.7 °C	967
12	Waldstatt	8.7 °C	1'906
13	Reute	8.7 °C	717
14	Schwellbrunn	8.4 °C	1'543
15	Gais	8.4 °C	3'150
16	Trogen	8.4 °C	1'905
17	Wald	8.1 °C	916
18	Urnäsch	7.9 °C	2'382
19	Bühler	7.9 °C	1'958
20	Schönengrund	7.7 °C	561

1991–2020 · MeteoSwiss, retrieved 28.08.2026

How we measure this

MeteoSchweiz

Mean annual air temperature from the MeteoSwiss 1 km gridded climate normals — a spatial analysis of the 1991–2020 normals period — read at the municipality's main settlement rather than interpolated from distant stations. The figure describes the inhabited valley floor, not the surrounding peaks.

Frequently asked questions

Which municipality in canton Appenzell Ausserrhoden is the warmest?: Walzenhausen is the warmest municipality in canton Appenzell Ausserrhoden, at 10.3 °C annual mean (1991–2020).
Where does the temperature data come from?: From the MeteoSwiss 1 km climate-normals grid ({year}), sampled at the main settlement. This is deliberately not the territorial average, which for Alpine municipalities is far colder because it takes in the high, glaciated terrain — Zermatt's village reads about 3.7 °C, its whole area about −3 °C.