Boston weather in July
Boston in July averages 24°C (74°F), 82 mm of rain and 9.3 hours of sun a day.
Of the twelve months in Boston, July is the warmest, the third driest and the sunniest.
- Average temp
- 24°C (74°F)
19–28°C · 66–82°F
- Rainfall
- 82 mm
Showers likely
- Sunshine
- 9.3 h
hours per day
- Wind
- 16 km/h
What is Boston like in July?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Some rain is likely; pack for showers.
Evening
Evenings stay warm.
What should I pack for Boston in July?
High-factor sun cream
With 9.3 hours of sun a day, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A light rain jacket
About 82 mm falls this month — showers rather than washouts.
July compared with June and August
July in Boston is 3.4°C warmer than June and 17 mm drier than it, which averages 20°C (68°F).
July in Boston is 0.7°C warmer than August and about as wet as it, which averages 23°C (73°F).
Daylight in Boston in July
On 15 July the sun is up for 14 hours 58 minutes in Boston, rising about 05:21 and setting about 20:18 local time.
July ends 45 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
Where to stay in Boston
Dates are a starting point for July.
Travel guides for Boston
What to read before you book.
Boston weather by month
TemperatureRainfall
How July compares with the rest of the year
July is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | -1°C / 30°F | 84 mm |
| February | 0°C / 32°F | 79 mm |
| March | 4°C / 38°F | 105 mm |
| April | 9°C / 49°F | 91 mm |
| May | 15°C / 59°F | 83 mm |
| June | 20°C / 68°F | 99 mm |
| July | 24°C / 74°F | 82 mm |
| August | 23°C / 73°F | 80 mm |
| September | 19°C / 66°F | 90 mm |
| October | 13°C / 55°F | 101 mm |
| November | 7°C / 45°F | 93 mm |
| December | 2°C / 36°F | 107 mm |
Check another month
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FAQs about Boston in July
July climate averages for Boston, 1991–2020.
Boston averages 24°C (74°F) in July, ranging from about 19°C (66°F) at night to 28°C (82°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 82 mm falls across July, enough to need a light jacket but not enough to reshape a trip.
Yes. July averages 24°C (74°F) against 23°C (73°F) in August — 0.7°C warmer.
July is 3.4°C warmer than June, and 17 mm drier.
Yes. July falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 9.3 hours of sun a day on the 1991–2020 average — among the brighter months anywhere.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what July is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 14 hours 58 minutes of daylight in mid-July, against 15 hours 16 minutes in June and 9 hours 6 minutes in December.
On 15 July, sunrise is about 05:21 and sunset about 20:18 local time. Both shift across the month — the month ends 45 minutes shorter than it starts.
