Sion Weather in May
Sion in May
The short of it: Sion in May averages a high of 21 °C (70 °F) and a low of 6 °C (44 °F), with 50 mm (2.0 in) of rain and about 15 h 16 min of daylight. Rated 4 of 5 for a visit; the best months are September and April. Source: TerraClimate climate normals, 1991–2020.
Average high 21° · low 6° · rain 50 mm · daylight 15 h 16 min
✦✦✦✦ Recommended for a visit · best months: September & April
Thirty years of records give Sion an average May high of 21°, a low of 6° and some 50 mm of rain. Spring takes hold here: highs climb 5° from April to about 21°, with nights near 6°. Rain is modest, about 50 mm, the 3rd wettest month.
The sun is up for about 15 h 16 min in mid-May, 98 minutes more than a month before.
For the traveller: pack light clothes and a jacket for the evening. The Almanac rates May 4 of 5 for a visit; the finest months here are September and April.
Against its neighbours, Sion runs warmer than most and drier than most in May. Grand Forks, 4 km to the ENE, sees much the same highs.
May in Sion, by the numbers
- Warmth rank
- 5th warmest of 12
- Rain rank
- 3rd wettest of 12
- Versus April
- 5° warmer, 10 mm more rain
- Versus June
- 3° colder
- Day–night spread
- 15°
- Snow season
- Nov–Mar
- Daylight, mid-month
- 15 h 16 min
- Average wind
- 10 km/h
Neighbouring Towns
May averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Grand ForksBritish Columbia | 4 km ENE | 22° | 7° | 51 mm |
| GreenwoodBritish Columbia | 17 km WNW | 19° | 5° | 57 mm |
| MidwayBritish Columbia | 20 km W | 20° | 5° | 54 mm |
| Christina LakeBritish Columbia | 21 km E | 21° | 6° | 54 mm |
| RepublicWashington | 45 km SSW | 20° | 4° | 44 mm |
| RosslandBritish Columbia | 51 km E | 17° | 5° | 65 mm |
| WarfieldBritish Columbia | 55 km E | 21° | 7° | 62 mm |
| Kettle FallsWashington | 55 km SE | 22° | 6° | 46 mm |