Boston Monthly Climate
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Temperature Overview
- Average Daytime Temperature: 15°C (59°F)
- Average Nighttime Temperature: 7°C (45°F)
Rainfall Statistics
- Annual average daily rainfall: 3.0 mm (0.12 inches) per day
- Rainiest month: November with around 3.8 mm (0.15 inches) per day
- Driest month: July with around 2.4 mm (0.09 inches) per day
- Average number of rainy days per year: 126 days
- Average annual snowfall: 1,143 mm (45 inches)
Monthly Weather Conditions
Temperature
Precipitation
Seasonal Breakdown
December-February (Winter)
- Highs: 2-4°C (36-39°F)
- Lows: -6 to -3°C (21-27°F)
- Rainy Days: 10-11 days per month
- Average Precipitation: 3.3 mm/day
- Snowfall: Average of 300-400 mm per month
March-May (Spring)
- Highs: 8-19°C (46-67°F)
- Lows: -1 to 10°C (30-50°F)
- Rainy Days: 11-12 days per month
- Average Precipitation: 3.2 mm/day
- Late season snowfall possible in March
June-August (Summer)
- Highs: 24-28°C (75-82°F)
- Lows: 15-18°C (59-64°F)
- Rainy Days: 9-10 days per month
- Average Precipitation: 2.7 mm/day
- Occasional heat waves with high humidity
September-November (Fall)
- Highs: 11-23°C (52-73°F)
- Lows: 3-13°C (37-55°F)
- Rainy Days: 9-11 days per month
- Average Precipitation: 3.4 mm/day
- First snowfall possible by late November
Best Time to Visit
The best time to visit Boston is from June to October, when weather conditions are most favorable. However, each season offers unique experiences:
Spring (March-May) brings gradually warming temperatures and blooming flowers throughout the city's parks and gardens. While March can still see snowfall, by May the weather is generally pleasant. This season offers lower hotel rates and fewer tourists before the summer rush.
Summer (June-August) is peak tourist season with warm temperatures perfect for outdoor activities, walking the Freedom Trail, and enjoying the Harbor Islands. While humidity can be high, sea breezes often provide relief. Baseball fans can enjoy Red Sox games at Fenway Park.
Fall (September-October) is arguably the most beautiful season, with comfortable temperatures and spectacular fall foliage. This is an excellent time for walking tours, visiting historic sites, and day trips to New England's countryside for leaf-peeping.
Winter (December-February) is cold with regular snowfall, but the city is beautiful under a blanket of snow. Winter offers unique activities like ice skating on Frog Pond, fewer tourists, and lower hotel rates. Many museums and indoor attractions provide warm refuge on cold days.
Winter (December-February) brings cold temperatures and snow, perfect for visiting museums like the Museum of Fine Arts, enjoying indoor performances, and experiencing Boston's excellent dining scene.
Other Cities in the United States
Want to explore more of the United States? Check out our weather guides for other American cities:
New York
Northeast metropolis with four distinct seasons
San Francisco
Coastal city with mild Mediterranean climate
Miami
Tropical paradise with warm weather year-round
Chicago
Windy city with continental climate
Los Angeles
Southern California with endless summer
Las Vegas
Desert city with hot, dry climate
Orlando
Theme park capital with subtropical weather
San Diego
Perfect weather year-round
Washington DC
Capital city with four seasons
Before you go ahead and plan your next visit, make sure to check the weather forecast for your exact travel dates on WhereWeather Website. You can also compare different cities and dates side-by-side.