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Climate & Weather Averages in Sion, Valais, Switzerland

Currently: 66 °F. Mild. (Weather station: Sion, Switzerland). See more current weather

Annual Weather Averages in Sion

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Sion

High Temp: 81 °F

Low Temp: 27 °F

Mean Temp: 52 °F

Precipitation: 1.97"

Humidity: 67%

Dew Point: 40 °F

Wind: 9 mph

Pressure: 30.05 "Hg

Visibility: 8 mi

January Climate & Weather Averages in Sion

High Temp: 41 °F

Low Temp: 27 °F

Mean Temp: 34 °F

Precipitation: 2.37"

Humidity: 77%

Dew Point: 27 °F

Wind: 6 mph

Pressure: 30.18 "Hg

Visibility: 8 mi

February Climate & Weather Averages in Sion

High Temp: 47 °F

Low Temp: 29 °F

Mean Temp: 38 °F

Precipitation: 1.62"

Humidity: 69%

Dew Point: 27 °F

Wind: 8 mph

Pressure: 30.14 "Hg

Visibility: 8 mi

March Climate & Weather Averages in Sion

High Temp: 57 °F

Low Temp: 35 °F

Mean Temp: 46 °F

Precipitation: 1.41"

Humidity: 60%

Dew Point: 31 °F

Wind: 11 mph

Pressure: 30.06 "Hg

Visibility: 8 mi

April Climate & Weather Averages in Sion

High Temp: 64 °F

Low Temp: 41 °F

Mean Temp: 53 °F

Precipitation: 1.34"

Humidity: 56%

Dew Point: 37 °F

Wind: 12 mph

Pressure: 29.95 "Hg

Visibility: 8 mi

May Climate & Weather Averages in Sion

High Temp: 71 °F

Low Temp: 49 °F

Mean Temp: 60 °F

Precipitation: 2.17"

Humidity: 60%

Dew Point: 46 °F

Wind: 12 mph

Pressure: 29.97 "Hg

Visibility: 8 mi

June Climate & Weather Averages in Sion

High Temp: 78 °F

Low Temp: 55 °F

Mean Temp: 67 °F

Precipitation: 1.90"

Humidity: 60%

Dew Point: 52 °F

Wind: 12 mph

Pressure: 29.99 "Hg

Visibility: 8 mi

July Climate & Weather Averages in Sion

High Temp: 81 °F

Low Temp: 58 °F

Mean Temp: 70 °F

Precipitation: 2.55"

Humidity: 61%

Dew Point: 55 °F

Wind: 12 mph

Pressure: 29.98 "Hg

Visibility: 8 mi

August Climate & Weather Averages in Sion

High Temp: 80 °F

Low Temp: 57 °F

Mean Temp: 68 °F

Precipitation: 2.41"

Humidity: 65%

Dew Point: 55 °F

Wind: 11 mph

Pressure: 30.00 "Hg

Visibility: 8 mi

September Climate & Weather Averages in Sion

High Temp: 72 °F

Low Temp: 51 °F

Mean Temp: 61 °F

Precipitation: 1.50"

Humidity: 69%

Dew Point: 50 °F

Wind: 10 mph

Pressure: 30.03 "Hg

Visibility: 8 mi

October Climate & Weather Averages in Sion

High Temp: 63 °F

Low Temp: 43 °F

Mean Temp: 53 °F

Precipitation: 1.66"

Humidity: 73%

Dew Point: 43 °F

Wind: 7 mph

Pressure: 30.07 "Hg

Visibility: 8 mi

November Climate & Weather Averages in Sion

High Temp: 50 °F

Low Temp: 34 °F

Mean Temp: 42 °F

Precipitation: 1.94"

Humidity: 76%

Dew Point: 34 °F

Wind: 6 mph

Pressure: 30.08 "Hg

Visibility: 8 mi

December Climate & Weather Averages in Sion

High Temp: 41 °F

Low Temp: 28 °F

Mean Temp: 34 °F

Precipitation: 2.78"

Humidity: 80%

Dew Point: 28 °F

Wind: 6 mph

Pressure: 30.17 "Hg

Visibility: 8 mi

Quick Climate Info

Hottest MonthJuly (70 °F avg)
Coldest MonthJanuary (34 °F avg)
Wettest MonthDecember (2.78" avg)
Windiest MonthJune (12 mph avg)
Annual precip.23.65" (per year)

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