Current Season
What season is it in Sion Airport?
Astronomical Season
fall
Based on Earth's position relative to the sun
Meteorological Season
fall
Based on temperature cycles and weather patterns
winter begins on December 21, 2025 (74 days from now)
Season Timeline for 2025
spring
Mar 20
Past
summer
Jun 21
Past
fall
Sep 22
Current
winter
Dec 21
Next
Hottest Month
July
Peak: 20°C
Average: 15°C
Coldest Month
January
Low: -11°C
Average: -7°C
Wettest Month
May
188 mm rain
28 mm snow
Best Time to Visit
Climate varies throughout the year
Monthly Climate Data
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-11 °C
-2 °C
7 km/h
154 mm
101 cm
Feb
-8 °C
2 °C
7 km/h
103 mm
65 cm
Mar
-5 °C
4 °C
6 km/h
131 mm
78 cm
Apr
-2 °C
8 °C
6 km/h
114 mm
45 cm
May
2 °C
12 °C
6 km/h
188 mm
28 cm
Jun
7 °C
18 °C
6 km/h
175 mm
0 cm
Jul
9 °C
20 °C
6 km/h
170 mm
0 cm
Aug
8 °C
19 °C
6 km/h
153 mm
1 cm
Sep
5 °C
15 °C
6 km/h
126 mm
5 cm
Oct
Current
1 °C
11 °C
7 km/h
111 mm
12 cm
Nov
-5 °C
4 °C
7 km/h
130 mm
66 cm
Dec
-10 °C
-1 °C
7 km/h
163 mm
93 cm