Sion Arpt
Weather station · 46.2°N 7.3°E · 482 m above sea level
ICAO LSGSWMO 06720Station data since 1955
Record high
28.5°C
in 2018
Record low
2.2°C
in 1962
Average high
20.6°C
all years on record
14.5°C short of the record for 23 September
Today’s high 14.0°C against 28.5°C in 2018. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
38.0°C
- Date
- Wednesday, 24 July 2019
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Sion Arpt, Switzerland
- Position
- 46.22°N 7.33°E · 482 m
Highest highest in available records since 1955. Source: NOAA GHCN-Daily.
All-time record low
−20.6°C
- Date
- Tuesday, 16 January 1979
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Sion Arpt, Switzerland
- Position
- 46.22°N 7.33°E · 482 m
Highest and lowest lowest in available records since 1955. Source: NOAA GHCN-Daily.
Where Sion Arpt is
46.22°N 7.33°E
Records by month
Jan
16.8°
−20.6°
Feb
21.4°
−17.2°
Mar
26.6°
−12.8°
Apr
30.2°
−7.2°
May
35.1°
−2.2°
Jun
37.0°
1.5°
Jul
38.0°
2.9°
Aug
37.6°
3.9°
Sep
34.0°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 14.0°C | 07:20 UTC | 8.0°C | 04:50 UTC |
| 2026-09-22 | 23.0°C | 15:20 UTC | 11.0°C | 23:20 UTC |
Nearby stations
- Aosta RgnlItaly53.8 km
- Payerne ArptSwitzerland76.4 km
- Bern ArptSwitzerland78.3 km
- Meiringen ArptSwitzerland83.5 km
- Geneva/Cointrin ArptSwitzerland92.8 km
- Annecy/Meythet ArptFrance100 km
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1955 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |
