Monthly Historical AveragesSion, VS
Average Temperature
High
10°
Feels 8
Low
0°
Feels -2
Average Precipitation
19 Days
187.4mm
13.5cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastMonday, May 18, 2026
Day
18°Feels 18
Wind
24 km/h W
Gust
36 km/h
Humidity
64%
P.O.P
80%
Rain
1-3 mm
Night
7°Feels 7
Wind
18 km/h S
Gust
27 km/h
Humidity
92%
P.O.P
40%
Rain
~1 mm
Historical AveragesMay 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity