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Weather Unterbäch

7-day forecast for Unterbäch

Today (Thursday 20 Aug) in Unterbäch: thunderstorms, 18 to 27 °C, precipitation 1.9 mm (93 %), wind up to 27 km/h. Tomorrow: thunderstorms, 15 to 19 °C.

DayWeatherMinMaxPrecip.Wind
Todaythunderstorms18 °C27 °C1.9 mm27 km/h
Tomorrowthunderstorms15 °C19 °C10.6 mm25 km/h
Sat 22 Augovercast12 °C21 °C0.0 mm14 km/h
Sun 23 Augpartly cloudy12 °C25 °C0.0 mm10 km/h
Mon 24 Augovercast16 °C26 °C0.0 mm12 km/h
Tue 25 Augthunderstorms18 °C24 °C3.3 mm9 km/h
Wed 26 Augovercast19 °C28 °C0.0 mm10 km/h

Forecast updated on 20.08.2026 at 15:41 (Open-Meteo model, elevation 738 m). The interactive block at the top refreshes hourly and covers 16 days.

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About Unterbäch

Unterbäch is a Swiss municipality located in the canton of Valais (VS), at 46.300° latitude and 7.797° longitude. The municipality is part of the Valais Alps, dry continental climate, among the sunniest in Switzerland. Also known as Unterbäch, Unterbäch benefits from precise weather monitoring with hourly and 15-day forecasts.

738m Elevation
Foothills Zone
Snow & altitude climate In the foothills snow lies for a few weeks each winter and inversion fog is common in the valley bottoms.

Climate of Unterbäch

The climate in Unterbäch is characteristic of the Valais Alps, dry continental climate, among the sunniest in Switzerland. 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 Unterbäch and neighboring municipalities.

On this page you will find the detailed weather forecast for Unterbäch: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.

Climate of Unterbäch: 1991–2020 normals

In Unterbäch (738 m), the mean annual temperature is 9.4 °C. The warmest month is July (19.2 °C on average) and the coldest January (−0.9 °C). About 608 mm of precipitation falls per year, peaking in December (66 mm) with a minimum in September (37 mm). The sun shines for about 1922 hours a year, mostly in July (268 h). On average there are 110 frost days and 20 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.4 °C and the absolute minimum −12.4 °C.

9.4 °CMean annual temperature
608 mmPrecipitation per year
1922 hSunshine hours per year
110Frost days per year
72Summer days (≥ 25 °C)
JFMAMJJASOND

Mean monthly precipitation (mm) — bar height relative to the wettest month.

MonthMean TAbs. maxAbs. minPrecip. (mm)Sunshine (h)Frost daysSummer days
Jan−0.9 °C10.0 °C−12.4 °C5712250
Feb1.0 °C13.6 °C−10.9 °C39116220
Mar6.0 °C19.7 °C−6.4 °C44188140
Apr9.9 °C22.9 °C−3.2 °C4121251
May13.9 °C27.7 °C0.7 °C5922706
Jun17.6 °C31.5 °C4.7 °C46244016
Jul19.2 °C32.4 °C7.0 °C50268022
Aug18.6 °C31.8 °C6.1 °C53252020
Sep14.5 °C27.3 °C2.6 °C3721106
Oct9.8 °C22.4 °C−2.1 °C5315340
Nov4.0 °C16.7 °C−7.9 °C6239160
Dec−0.3 °C11.2 °C−11.6 °C660240
Year9.4 °C32.4 °C−12.4 °C608192211072

Source: MeteoSwiss open data (1991–2020 normals) — stations Visp (4 km, 639 m), Grächen (12 km, 1605 m), Blatten, Lötschental (14 km, 1548 m), adjusted to the elevation of Unterbäch (738 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.

Nearby cities

Check the weather of cities near Unterbäch:

Frequently asked questions about weather in Unterbäch

What is the weather in Unterbäch today?

At the top of the page you will find the current temperature, precipitation and wind in Unterbäch, updated in real time.

What is the 15-day forecast for Unterbäch?

The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Unterbäch.

Will it rain tomorrow in Unterbäch?

Check the 48-hour hourly forecast to see exactly when precipitation is expected in Unterbäch.

What is the air quality in Unterbäch?

The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Unterbäch.

Are there weather alerts for Unterbäch?

Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.

At what altitude is Unterbäch located?

Unterbäch sits at around 738 m above sea level in the canton of Valais. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Unterbäch?

The warmest month in Unterbäch is July, averaging 19.2 °C (1991–2020 normal). The coldest is January at −0.9 °C.

How much does it rain in Unterbäch per year?

Unterbäch receives about 608 mm of precipitation a year. The wettest month is December (66 mm), the driest September (37 mm).

When is the best time to visit Unterbäch?

For warmth and sunshine: July (19.2 °C on average, 268 h of sun). The coldest month is January (−0.9 °C). Check the 15-day forecast above for your dates.