Boston Weather in June

June in Boston brings high temperatures, with highs of 24°C (75°F) and nights dropping to 15°C (59°F). Rainfall is on the higher side this month, averaging around 127 mm (5 in), so keep a rain jacket handy.

Rainfall in Boston in June

You can expect rain on around 14 days based on historical patterns, with 127 mm (5 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Boston in June

June in Boston brings high temperatures, with highs of 24°C (75°F) and nights around 15°C (59°F). June is typically considered a summer month. Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Boston in June

Enjoy a sunny month with about 283 hours of sunshine, the clear skies make Boston even more beautiful.

Wind Speed in Boston in June

Average wind conditions reach 5 m/s (10 knots) in June. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in June

At 14°C (57°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

If you prefer enjoying temperate temperatures and rain-free days, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Boston's climate page.

Boston Temperature in June

Min Temperature 15°C (59°F)  

Max Temperature 24°C (75°F)  

Water Temperature 14°C (57°F)  

Chance of Rain 47%  

Precipitation 127 mm (5 in)  

Rainy days 14 days  

Humidity 69%  

Windspeed 5 m/s (10 knots)  

Sunshine 283 hours  

Percentage Sunshine 63%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Boston typically rise from around 22°C (72°F) at the start of June to approximately 27°C (81°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 18°C (64°F).

Average temperatures in June

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in June

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Historical weather for Boston in June

Browse day-by-day weather records for Boston spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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Boston historical weather extremes in June

Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Boston.

• On June 24, 2025, temperatures climbed to 38°C (100°F), marking the warmest June day on record.
• The coldest June day was on June 1, 2015, with a maximum of 9°C (48°F).
• The coldest night in June in Boston was on June 7, 2000, with a minimum of 7°C (45°F).

What to Wear in Boston in June

Comfortable temperatures call for an easy wardrobe in June. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 14°C (57°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Boston in June

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Boston's climate page.

More climate data for Boston

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Boston climate overview or explore weather in the United States of America.