About Au (SG)
Au (SG) is a Swiss municipality located in the canton of St. Gallen (SG), at 47.431° latitude and 9.639° longitude. The municipality is part of the eastern Alps, alpine climate with snowy winters and cool summers. Also known as Au (SG), Au (SG) benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Au (SG)
The climate in Au (SG) is characteristic of the eastern Alps, alpine climate with snowy winters and cool summers. 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 Au (SG) and neighboring municipalities.
On this page you will find the detailed weather forecast for Au (SG): current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Au (SG): 1991–2020 normals
In Au (SG) (403 m), the mean annual temperature is 10.2 °C. The warmest month is July (19.3 °C on average) and the coldest January (1.5 °C). About 1357 mm of precipitation falls per year, peaking in August (159 mm) with a minimum in February (76 mm). On average there are 78 frost days and 6 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 30.9 °C and the absolute minimum −8.8 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Frost days | Summer days |
|---|---|---|---|---|---|---|
| Jan | 1.5 °C | 12.8 °C | −8.8 °C | 85 | 20 | 0 |
| Feb | 2.2 °C | 14.3 °C | −7.9 °C | 76 | 18 | 0 |
| Mar | 5.7 °C | 18.7 °C | −4.9 °C | 95 | 12 | 0 |
| Apr | 9.7 °C | 22.7 °C | −1.6 °C | 93 | 3 | 0 |
| May | 14.1 °C | 27.0 °C | 3.5 °C | 134 | 0 | 3 |
| Jun | 17.6 °C | 29.9 °C | 7.5 °C | 146 | 0 | 10 |
| Jul | 19.3 °C | 30.9 °C | 10.0 °C | 154 | 0 | 14 |
| Aug | 18.8 °C | 30.1 °C | 9.3 °C | 159 | 0 | 12 |
| Sep | 14.7 °C | 25.6 °C | 5.5 °C | 121 | 0 | 2 |
| Oct | 10.7 °C | 22.2 °C | 1.4 °C | 97 | 1 | 0 |
| Nov | 5.7 °C | 17.8 °C | −3.9 °C | 91 | 8 | 0 |
| Dec | 2.6 °C | 14.6 °C | −7.3 °C | 104 | 17 | 0 |
| Year | 10.2 °C | 30.9 °C | −8.8 °C | 1357 | 78 | 42 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Altenrhein (8 km, 398 m), St. Gallen (18 km, 776 m), Säntis (30 km, 2501 m), adjusted to the elevation of Au (SG) (403 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Au (SG):
- Weather Balgach
- Weather Widnau
- Weather Berneck
- Weather St. Margrethen
- Weather Diepoldsau
- Weather Rheineck
- Weather Walzenhausen
- Weather Rebstein
- Weather Oberriet (SG)
- Weather Wolfhalden
- Weather Reute (AR)
- Weather Marbach (SG)
→ Nearby cities · Canton St. Gallen
Frequently asked questions about weather in Au (SG)
What is the weather in Au (SG) today?
At the top of the page you will find the current temperature, precipitation and wind in Au (SG), updated in real time.
What is the 15-day forecast for Au (SG)?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Au (SG).
Will it rain tomorrow in Au (SG)?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Au (SG).
What is the air quality in Au (SG)?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Au (SG).
Are there weather alerts for Au (SG)?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Au (SG) located?
Au (SG) sits at around 403 m above sea level in the canton of St. Gallen. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Au (SG)?
The warmest month in Au (SG) is July, averaging 19.3 °C (1991–2020 normal). The coldest is January at 1.5 °C.
How much does it rain in Au (SG) per year?
Au (SG) receives about 1357 mm of precipitation a year. The wettest month is August (159 mm), the driest February (76 mm).
When is the best time to visit Au (SG)?
For warmth and sunshine: July (19.3 °C on average, — h of sun). The coldest month is January (1.5 °C). Check the 15-day forecast above for your dates.