Live Weather & Forecast
Weather in Sion
Valais/Wallis, Switzerland · Real-time conditions & 3-day outlook
11°C
Feels like 12°C
52°F / Feels 53°F
Patchy rain nearby
Sion, Valais/Wallis
🌙 Nighttime
Updated: 2026-04-16 01:15
Humidity
76%
Wind
3.6 km/h WNW
Wind Gust
4 km/h
Pressure
1022 mb
Visibility
10 km
UV Index
0
(Low)
Precipitation
0.01 mm
Cloud Cover
0%
Dew Point
3.8°C
Wind Degree
301°
Air Quality Index
US EPA: Good
UK DEFRA: Low (2)
CO
144.9 μg/m³
NO₂
4.5 μg/m³
O₃
82 μg/m³
SO₂
1.1 μg/m³
PM 2.5
15.2 μg/m³
PM 10
27 μg/m³
Today's Hourly Forecast
24-hour breakdown for Sion, Valais/Wallis
12 AM
5°
Mist
1 AM
11°
Patchy rain nearby
2 AM
5°
Patchy rain nearby
3 AM
4°
Partly Cloudy
4 AM
4°
Patchy rain nearby
5 AM
3°
Patchy rain nearby
6 AM
3°
Partly Cloudy
7 AM
3°
Partly Cloudy
8 AM
4°
Patchy rain nearby
9 AM
5°
Patchy rain nearby
10 AM
7°
Patchy rain nearby
11 AM
8°
Patchy rain nearby
12 PM
10°
Sunny
1 PM
11°
Sunny
2 PM
11°
Sunny
3 PM
12°
Sunny
4 PM
12°
Partly Cloudy
5 PM
12°
Patchy rain nearby
6 PM
11°
Partly Cloudy
7 PM
10°
Patchy rain nearby
8 PM
7°
Partly Cloudy
9 PM
5°
Clear
10 PM
5°
Partly Cloudy
11 PM
5°
Partly Cloudy
3-Day Forecast
Daily overview for Sion, Valais/Wallis
Today
Patchy rain nearby
12°
/
3°
🌧️ 84% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 9 km/h
🌧️ Total precip: 0.11 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:42 AM
🌇 Sunset: 08:19 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Sunny
14°
/
3°
🌧️ 0% chance of rain
💧 Avg. humidity: 71%
💨 Max wind: 9.7 km/h
🌧️ Total precip: 0.09 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:41 AM
🌇 Sunset: 08:20 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Patchy rain nearby
14°
/
4°
🌧️ 88% chance of rain
💧 Avg. humidity: 68%
💨 Max wind: 9.7 km/h
🌧️ Total precip: 0.24 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:39 AM
🌇 Sunset: 08:22 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Best Time to Visit Sion
Plan your trip to Sion, Switzerland around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Sion?
Current conditions in Sion: Patchy rain nearby, temperature 11°C, humidity 76%.
What is the best time to visit Sion?
The best time to visit Sion is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Sion?
Sion is located at approximately 46.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Sion?
The wettest period in Sion is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Sion?
For visits to Sion during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Sion in?
Sion is located in Switzerland, in the state of Valais/Wallis.
What are the public holidays in Sion in 2026?
View the 2026 public holidays for Sion on our Holidays page.
What are the GPS coordinates used for the weather forecast in Sion?
The weather forecast for Sion uses coordinates 46.2312, 7.3589.