Boston weather in July
July in Boston: hot, rainy — a great time to visit.
#7 of 12 months in Boston · #385 of 604 destinations to visit in July · comfort 72/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Boston climate normals — July
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 20°C / 67°F | |
| Feels like (high) | 31°C / 88°F | |
| Rainfall | 104 mm / 4.1 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 18°C / 65°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 14.9 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 61 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Boston in July — FAQ
- Is July a good time to visit Boston?
- July in Boston: hot, rainy — a great time to visit. It ranks #7 of 12 months for Boston on SeasonMap's comfort score (72/100).
- What is the weather like in Boston in July?
- In July, Boston averages a daily high of 28.1°C and a low of 19.7°C, with about 103.6 mm of rain over roughly 10.8 rainy days.
- What is the air quality in Boston in July?
- Boston has a mean US Air Quality Index of about 61 in July.