Temperatures in July
It's warm in July in Boston with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 31°C. At night, you can expect temperatures between 19°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Boston in July. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of July
The month of July starts in Boston with hot temperatures, averaging around 28°C during the day and nights close to 20°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Since temperatures can differ between day and night, it’s a good idea to dress in layers.
Mid-July
By mid-July, the average daytime temperature rises to around 29°C, with nights close to 21°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
Temperatures vary between day and night, so it’s smart to wear layers.
End of July
By the end of July, the average daytime temperature in Boston will be around 29°C, with nights close to 21°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
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Water temperature
The water temperature at Boston is 18°C this month. You can swim, but it's a bit on the chilly side.
Precipitation in July
In July, there is an average of 107 mm of precipitation, spread over 8 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 27% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in July for Boston. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Boston in July |
London | ||
|---|---|---|---|
 Average Temperature |
28°C | 23°C | |
 High Temp |
31°C | 27°C | |
| Low Temp |
26°C | 21°C | |
 Total Precipitation |
107 mm | 52 mm | |
| Rainy Days |
8 days | 9 days | |
June
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is July a good time to visit Boston?
After some sun? Then July isn’t the best time to be in Boston. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Boston in July
With 38°C, Boston hit the highest temperature in the last 10 years in July 2022. The lowest daytime temperature in this month was 15°C in 2021. The extreme night temperatures ranged from a low of 13°C to a high of 29°C.
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Daily Temperature in July in Boston
This chart shows the average daily temperatures, both day and night, for each day in July in Boston, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in July in Boston
The chart below shows the average daily precipitation in July for Boston, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for July, you can expect around 8 days of rain in Boston.
Daily UV Index in July in Boston
This chart shows the average daily UV index in July in Boston, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in July in Boston Over the Years
This chart shows the average temperature in July in Boston, measured in degrees Celsius, over the past years.
Total Precipitation in July in Boston Over the Years
This chart shows the average precipitation in July in Boston, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in July for Boston
Click on a specific day in July for detailed info on the typical weather on that day in Boston. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in July in Boston
Have you been to Boston in July?
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Average Weather in Boston by Month
Click on a month below to see detailed weather info for Boston. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
