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Weather Onsernone

7-day forecast for Onsernone

Today (Thursday 20 Aug) in Onsernone: thunderstorms, 17 to 22 °C, precipitation 30.4 mm (100 %), wind up to 10 km/h. Tomorrow: thunderstorms, 14 to 19 °C.

DayWeatherMinMaxPrecip.Wind
Todaythunderstorms17 °C22 °C30.4 mm10 km/h
Tomorrowthunderstorms14 °C19 °C7.0 mm6 km/h
Sat 22 Augovercast11 °C25 °C0.0 mm9 km/h
Sun 23 Augpartly cloudy17 °C24 °C0.0 mm10 km/h
Mon 24 Augshowers19 °C24 °C0.0 mm10 km/h
Tue 25 Augthunderstorms18 °C22 °C20.1 mm6 km/h
Wed 26 Augpartly cloudy17 °C25 °C0.0 mm9 km/h

Forecast updated on 20.08.2026 at 15:41 (Open-Meteo model, elevation 674 m). The interactive block at the top refreshes hourly and covers 16 days.

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About Onsernone

Onsernone is a Swiss municipality located in the canton of Ticino (TI), at 46.198° latitude and 8.635° longitude. The municipality is part of the south of the Alps (Ticino), insubric near-Mediterranean climate, mild and sunny. Also known as Onsernone, Onsernone benefits from precise weather monitoring with hourly and 15-day forecasts.

674m 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 Onsernone

The climate in Onsernone is characteristic of the south of the Alps (Ticino), insubric near-Mediterranean climate, mild and sunny. 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 Onsernone and neighboring municipalities.

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

Climate of Onsernone: 1991–2020 normals

In Onsernone (674 m), the mean annual temperature is 10.9 °C. The warmest month is July (20.0 °C on average) and the coldest January (2.7 °C). About 1636 mm of precipitation falls per year, peaking in October (189 mm) with a minimum in February (55 mm). The mean monthly maximum reaches 28.8 °C and the absolute minimum −5.5 °C.

10.9 °CMean annual temperature
1636 mmPrecipitation per year
JFMAMJJASOND

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

MonthMean TAbs. maxAbs. minPrecip. (mm)
Jan2.7 °C13.5 °C−5.5 °C58
Feb3.5 °C14.6 °C−4.9 °C55
Mar6.9 °C18.7 °C−2.6 °C80
Apr10.0 °C21.5 °C0.7 °C142
May14.0 °C24.9 °C5.0 °C174
Jun17.9 °C28.0 °C8.8 °C169
Jul20.0 °C28.8 °C11.3 °C145
Aug19.6 °C28.7 °C11.0 °C188
Sep15.5 °C24.7 °C7.2 °C182
Oct11.2 °C21.2 °C2.8 °C189
Nov6.6 °C16.3 °C−1.5 °C178
Dec3.4 °C13.9 °C−4.8 °C74
Year10.9 °C28.8 °C−5.5 °C1636

Source: MeteoSwiss open data (1991–2020 normals) — stations Cimetta (12 km, 1661 m), Locarno / Monti (12 km, 367 m), Magadino / Cadenazzo (23 km, 203 m), adjusted to the elevation of Onsernone (674 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.

Nearby cities

Check the weather of cities near Onsernone:

Frequently asked questions about weather in Onsernone

What is the weather in Onsernone today?

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

What is the 15-day forecast for Onsernone?

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

Will it rain tomorrow in Onsernone?

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

What is the air quality in Onsernone?

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

Are there weather alerts for Onsernone?

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

At what altitude is Onsernone located?

Onsernone sits at around 674 m above sea level in the canton of Ticino. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Onsernone?

The warmest month in Onsernone is July, averaging 20.0 °C (1991–2020 normal). The coldest is January at 2.7 °C.

How much does it rain in Onsernone per year?

Onsernone receives about 1636 mm of precipitation a year. The wettest month is October (189 mm), the driest February (55 mm).

When is the best time to visit Onsernone?

For warmth and sunshine: July (20.0 °C on average, — h of sun). The coldest month is January (2.7 °C). Check the 15-day forecast above for your dates.