Monthly climate guide
Boston weather in July
Expect hot weather in Boston in July: afternoons reach about 28°C (83°F), while nights drop to around 18°C (64°F). Around 87 mm of rain falls over the month (some rain), and skies are a mix of sun and cloud. Daytime highs are 5°C warmer than June and about the same as August.
What stands out in July
- Humidity near 75% makes 28°C feel stickier than it sounds.
- Seasonally, July counts as mid-summer in Boston.
- Just 80 km apart, but Boston runs about 6°C warmer than Provincetown this month.
July is typically Boston's warmest month.
Avg high
28°C
83°F
Avg low
18°C
64°F
Rainfall
87 mm
some rain
Humidity
75%
relative
Sky
54%
cloud · a mix of sun and cloud
Boston weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 1°C / 34°F | -7°C / 19°F | 84 mm | 87% | 62% |
| February | 2°C / 35°F | -7°C / 19°F | 92 mm | 88% | 63% |
| March | 6°C / 43°F | -3°C / 26°F | 86 mm | 82% | 61% |
| April | 13°C / 55°F | 2°C / 36°F | 108 mm | 79% | 63% |
| May | 19°C / 66°F | 9°C / 47°F | 77 mm | 79% | 65% |
| June | 24°C / 74°F | 14°C / 56°F | 116 mm | 78% | 60% |
| July | 28°C / 83°F | 18°C / 64°F | 87 mm | 75% | 54% |
| August | 28°C / 82°F | 17°C / 63°F | 96 mm | 72% | 51% |
| September | 24°C / 75°F | 13°C / 56°F | 91 mm | 74% | 53% |
| October | 17°C / 63°F | 8°C / 46°F | 125 mm | 79% | 61% |
| November | 10°C / 49°F | 1°C / 34°F | 97 mm | 81% | 57% |
| December | 4°C / 40°F | -3°C / 27°F | 122 mm | 87% | 66% |
What to pack for July
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is July a good time to visit Boston?
Compare the months in the chart above to find your ideal window.
Best time to visit Boston →Other United States cities in July
Cite or embed this data
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Boston weather in July. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/boston/july
<a href="https://weathercompare.eu/weather/usa/boston/july">Boston weather in July</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/boston" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Boston weather in July"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/boston/july">Boston weather in July</a> – WeatherCompare</p>
Boston in July: quick answers
Is July a good time to visit Boston?
Yes. July is one of the best months for Boston, with highs around 28°C and about 87 mm of rain.
How warm is Boston in July?
Average highs are about 28°C (83°F) and average lows about 18°C (64°F), based on 10 years of daily data.
Does it rain a lot in Boston in July?
Boston typically gets around 87 mm of rain in July — some rain.
Figures are long-term averages for the area around Boston (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.