Weather Comparison
Side-by-side weather comparison for October
| Metric | Boston | Montreal | Better |
|---|---|---|---|
| Average HighHigher is warmer | 16°C (61°F)▲ | 13°C (55°F) | Boston |
| Average LowHigher is milder | 9°C (48°F)▲ | 6°C (43°F) | Boston |
| Rain DaysFewer is drier | 10 days▲ | 12 days | Boston |
| PrecipitationLess is drier | 108 mm▲ | 112 mm | Boston |
| Sunshine HoursMore is sunnier | 8h/day▲ | 7h/day | Boston |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 21 km/h | 19 km/h▲ | Montreal |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Boston edges ahead as the better destination in October. Boston offers 8 hours of daily sunshine with only 10 rain days, while Montreal sees 7 sunshine hours and 12 rain days.
Boston sits in the comfortable travel range at 16°C. Montreal is cooler at 13°C.
For travelers who prioritize dry weather, Boston is the stronger choice in October. Boston receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Boston reaches an average high of 16°C (61°F) and drops to 9°C (48°F) at night during October. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.
Montreal averages 13°C (55°F) for the high and 6°C (43°F) for the low, with a daily range of 7°C. The 3°C difference is noticeable but not dramatic.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in October.
Boston receives approximately 108 mm of rainfall across 10 rain days during October. You can expect rain roughly every other day.
Montreal sees 112 mm over 12 rain days. That makes Boston the drier option by 2 rain days and 4 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 16°C, lows of 9°C, 10 rain days
Highs of 13°C, lows of 6°C, 12 rain days
Pack for both: warm layers, a mid-weight jacket, long trousers, waterproof jacket, compact umbrella, waterproof shoes. These items are useful in either destination during October.
The table below shows average high temperatures and rain days for every month. October is highlighted for quick reference.
| Month | Boston | Montreal | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 2°C | 10d | -5°C | 11d |
| Feb | 3°C | 9d | -3°C | 10d |
| Mar | 7°C | 11d | 3°C | 11d |
| Apr | 14°C | 11d | 11°C | 12d |
| May | 19°C | 11d | 19°C | 12d |
| Jun | 25°C | 10d | 23°C | 12d |
| Jul | 28°C | 10d | 26°C | 13d |
| Aug | 27°C | 9d | 25°C | 12d |
| Sep | 23°C | 8d | 21°C | 10d |
| Oct | 16°C | 10d | 13°C | 12d |
| Nov | 10°C | 10d | 6°C | 12d |
| Dec | 5°C | 11d | -1°C | 12d |
Boston Weather in October
Full forecast, packing tips, and activities
Montreal Weather in October
Full forecast, packing tips, and activities