Thunder Bay Weather in May
Thunder Bay in May
The short of it: Thunder Bay in May averages a high of 17 °C (62 °F) and a low of 4 °C (39 °F), with 80 mm (3.1 in) of rain and about 15 h 12 min of daylight. Rated 3 of 5 for a visit; the best months are June and August. Source: TerraClimate climate normals, 1991–2020.
Average high 17° · low 4° · rain 80 mm · daylight 15 h 12 min
✦✦✦ Fair for a visit · best months: June & August
Thirty years of records give Thunder Bay an average May high of 17°, a low of 4° and some 80 mm of rain. Spring takes hold here: highs climb 8° from April to about 17°, with nights near 4°. Wet spells are common — about 80 mm, the 2nd wettest month. The snow cover usually melts away this month.
The sun is up for about 15 h 12 min in mid-May, 95 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 August.
Against its neighbours, Thunder Bay runs warmer than most and wetter than most in May. Vickers Park, 1 km to the SW, sees much the same highs.
May in Thunder Bay, by the numbers
- Warmth rank
- 5th warmest of 12
- Rain rank
- 2nd wettest of 12
- Versus April
- 8° warmer, 25 mm more rain
- Versus June
- 6° colder
- Day–night spread
- 13°
- Snow season
- Nov–Apr
- Daylight, mid-month
- 15 h 12 min
- Average wind
- 15 km/h
Neighbouring Towns
May averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Vickers ParkOntario | 1 km SW | 17° | 4° | 80 mm |
| NorthwoodOntario | 2 km WNW | 17° | 4° | 80 mm |
| East EndOntario | 2 km NE | 17° | 4° | 80 mm |
| IntercityOntario | 3 km N | 17° | 4° | 80 mm |
| College ParkOntario | 3 km WNW | 17° | 4° | 80 mm |
| WestfortOntario | 3 km WSW | 17° | 4° | 80 mm |
| ParkdaleOntario | 4 km W | 16° | 3° | 80 mm |
| Academy HeightsOntario | 4 km N | 17° | 3° | 80 mm |