Boston weather in October
October in Boston: nice, rainy, with clean air — a great time to visit.
#5 of 12 months in Boston · #299 of 604 destinations to visit in October · comfort 76/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Boston climate normals — October
| Daytime high | 17°C / 63°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 51°F | |
| Feels like (high) | 16°C / 61°F | |
| Rainfall | 124 mm / 4.9 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 9°C / 49°F | |
| Sunshine | 6.6 h/day | |
| Daylight | 11.1 h | |
| Wind | 20 km/h / 12 mph | |
| Snowfall | 0.7 cm / 0.3 in | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Boston in October — FAQ
- Is October a good time to visit Boston?
- October in Boston: nice, rainy, with clean air — a great time to visit. It ranks #5 of 12 months for Boston on SeasonMap's comfort score (76/100).
- What is the weather like in Boston in October?
- In October, Boston averages a daily high of 17.3°C and a low of 10.3°C, with about 123.7 mm of rain over roughly 9.6 rainy days.
- What is the air quality in Boston in October?
- Boston has a mean US Air Quality Index of about 39 in October.