When to go · Cornwall, Ontario
Cornwall, Ontario in September
Great month. Inside Cornwall, Ontario's best window: Jun–Sep.
Key facts
- Verdict
- Great
- Temperature
- 22°C72°F / 12°C53°F
- average high / low
- Rain days
- 12
- Crowds
- Medium
- Canada overall
- Prices
- Medium
- Canada overall
Verdict
GreatBest and avoid months for Cornwall, Ontario
Inside Cornwall, Ontario's best window: Jun–Sep.
Weather in September
- Cornwall, OntarioHighs around 22 °C, lows around 11.8 °C, rain on about 12 daysHighs around 72 °F, lows around 53 °F, rain on about 12 days
Crowds and prices
- Crowds · Canada overall
- Medium
- Prices · Canada overall
- Medium
Canada overall: After Labour Day crowds drop; larches turn gold in the Rockies late in the month.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast