Alliston Weather in May
Alliston in May
The short of it: Alliston in May averages a high of 18 °C (64 °F) and a low of 6 °C (42 °F), with 85 mm (3.3 in) of rain and about 14 h 45 min of daylight. Rated 3 of 5 for a visit; the best months are June and September. Source: TerraClimate climate normals, 1991–2020.
Average high 18° · low 6° · rain 85 mm · daylight 14 h 45 min
✦✦✦ Fair for a visit · best months: June & September
May in Alliston brings afternoons near 18° and nights around 6°, with about 85 mm of rain over the month. Highs rise 8° against April, to near 18°; nights run about 6°. Wet spells are common — about 85 mm, the 2nd wettest month. The snow cover usually melts away this month.
The sun is up for about 14 h 45 min in mid-May, 81 minutes more than a month before.
For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates May 3 of 5 for a visit; the finest months here are June and September.
Against its neighbours, Alliston runs warmer than most and drier than most in May. Innisfil, 24 km to the NE, sees much the same highs.
May in Alliston, by the numbers
- Warmth rank
- 5th warmest of 12
- Rain rank
- 2nd wettest of 12
- Versus April
- 8° warmer, 13 mm more rain
- Versus June
- 5° colder
- Day–night spread
- 12°
- Snow season
- Nov–Apr
- Daylight, mid-month
- 14 h 45 min
- Average wind
- 14 km/h