When to go · St. Marys
St. Marys in May
Good month. Outside the best window (Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat). Across Canada: Victoria Day weekend opens the season; Rockies lakes still frozen at altitude.
Key facts
- Verdict
- Good
- Temperature
- 19°C (66°F)66°F (19°C) / 7°C (45°F)45°F (7°C)
- average high / low
- Rain days
- 12
- Crowds
- Medium
- Canada overall
- Prices
- Medium
- Canada overall
Verdict
Outside the best window (Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat). Across Canada: Victoria Day weekend opens the season; Rockies lakes still frozen at altitude.
Is another month better than May?
May is rated good. These months rate higher:
- JuneGreatInside St. Marys's best window: Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat.
- JulyGreatInside St. Marys's best window: Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat.
- AugustGreatInside St. Marys's best window: Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat.
- SeptemberGreatInside St. Marys's best window: Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat.
Weather in May
- St. MarysHighs around 19 °C (66 °F), lows around 7 °C (45 °F), rain on about 12 daysHighs around 66 °F (19 °C), lows around 45 °F (7 °C), rain on about 12 days
Crowds and prices
- Crowds · Canada overall
- Medium
- Prices · Canada overall
- Medium
Canada overall: Victoria Day weekend opens the season; Rockies lakes still frozen at altitude.
Compare two months
Weather, crowds and prices for any two months in St. Marys, side by side.
Verdict
May: Good
Jun: Great (better)
Daytime high
May: 19 °C (66 °F)66 °F (19 °C)
Jun: 24 °C (75 °F)75 °F (24 °C)
Night low
May: 7 °C (45 °F)45 °F (7 °C)
Jun: 12 °C (54 °F)54 °F (12 °C)
Rain days
May: 12
Jun: 11 (better)
Crowds
May: Medium
Jun: Medium
Prices
May: Medium
Jun: Medium
Festivals listed
May: 0
Jun: 1
May: Outside the best window (Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat). Across Canada: Victoria Day weekend opens the season; Rockies lakes still frozen at altitude.
June: Inside St. Marys's best window: Jun–Sep for the quarry and the trail; late Sep–Oct for the stone streets without the heat.
St. Marys: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast