About Altendorf
Altendorf is a Swiss municipality located in the canton of Schwyz (SZ), at 47.149° latitude and 8.825° longitude. The municipality is part of the central Alps, pronounced alpine climate with heavy winter snowfall. Also known as Altendorf, Altendorf benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Altendorf
The climate in Altendorf is characteristic of the central Alps, pronounced alpine climate with heavy winter snowfall. Temperatures, precipitation and wind conditions vary throughout the year with local features linked to altitude and surrounding terrain. Our data comes from official weather stations and real-time Netatmo sensors for Altendorf and neighboring municipalities.
On this page you will find the detailed weather forecast for Altendorf: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Altendorf: 1991–2020 normals
In Altendorf (757 m), the mean annual temperature is 8.1 °C. The warmest month is July (17.1 °C on average) and the coldest January (−0.7 °C). About 1600 mm of precipitation falls per year, peaking in July (186 mm) with a minimum in January (94 mm). The sun shines for about 1596 hours a year, mostly in July (217 h). On average there are 114 frost days and 2 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 29.4 °C and the absolute minimum −13.1 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | −0.7 °C | 10.9 °C | −13.1 °C | 94 | 57 | 26 | 0 |
| Feb | −0.2 °C | 12.2 °C | −12.7 °C | 94 | 82 | 23 | 0 |
| Mar | 3.5 °C | 16.5 °C | −8.5 °C | 114 | 130 | 17 | 0 |
| Apr | 7.6 °C | 21.0 °C | −3.5 °C | 110 | 170 | 8 | 0 |
| May | 11.7 °C | 25.0 °C | 1.4 °C | 165 | 186 | 1 | 1 |
| Jun | 15.3 °C | 28.2 °C | 5.1 °C | 176 | 201 | 0 | 5 |
| Jul | 17.1 °C | 29.4 °C | 7.6 °C | 186 | 217 | 0 | 8 |
| Aug | 16.8 °C | 28.8 °C | 7.1 °C | 185 | 202 | 0 | 7 |
| Sep | 12.8 °C | 24.4 °C | 3.0 °C | 137 | 146 | 0 | 1 |
| Oct | 8.7 °C | 21.4 °C | −1.1 °C | 110 | 101 | 3 | 0 |
| Nov | 3.7 °C | 16.9 °C | −6.9 °C | 109 | 57 | 13 | 0 |
| Dec | 0.3 °C | 12.3 °C | −11.3 °C | 121 | 47 | 24 | 0 |
| Year | 8.1 °C | 29.4 °C | −13.1 °C | 1600 | 1596 | 114 | 21 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Einsiedeln (5 km, 911 m), Wädenswil (14 km, 485 m), Glarus (22 km, 517 m), adjusted to the elevation of Altendorf (757 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Altendorf:
- Weather Galgenen
- Weather Lachen
- Weather Vorderthal
- Weather Wangen (SZ)
- Weather Schübelbach
- Weather Freienbach
- Weather Einsiedeln
- Weather Feusisberg
- Weather Wollerau
- Weather Unteriberg
- Weather Rapperswil-Jona
- Weather Reichenburg
→ Nearby cities · Canton Schwyz
Frequently asked questions about weather in Altendorf
What is the weather in Altendorf today?
At the top of the page you will find the current temperature, precipitation and wind in Altendorf, updated in real time.
What is the 15-day forecast for Altendorf?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Altendorf.
Will it rain tomorrow in Altendorf?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Altendorf.
What is the air quality in Altendorf?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Altendorf.
Are there weather alerts for Altendorf?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Altendorf located?
Altendorf sits at around 757 m above sea level in the canton of Schwyz. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Altendorf?
The warmest month in Altendorf is July, averaging 17.1 °C (1991–2020 normal). The coldest is January at −0.7 °C.
How much does it rain in Altendorf per year?
Altendorf receives about 1600 mm of precipitation a year. The wettest month is July (186 mm), the driest January (94 mm).
When is the best time to visit Altendorf?
For warmth and sunshine: July (17.1 °C on average, 217 h of sun). The coldest month is January (−0.7 °C). Check the 15-day forecast above for your dates.