Boston weather live forecast

Today's maximum temperature in Boston is expected to be 32°C. Select a day from the live weather forecast for Boston, Massachusetts, USA for more weather parameters.

Wednesday
20th May
32

19

10

UV8
Thursday
21st May
18

13

7

UV5
Friday
22nd May
17

10

7

UV7
Saturday
23rd May
17

10

0

UV5
Sunday
24th May
17

10

12

UV7

5-day weather forecast updated at 04:00 on Wednesday 20th May 2026 GMT

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The 5-day weather forecast for Massachusetts (Boston) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Boston weather forecast by day

Below are the detailed weather forecasts for Boston for the next 5 days.

Boston weather for Wednesday 20th May 2026

Expect isolated thunderstorms in Boston, Massachusetts with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a moderate breeze of 27 kph from the west.

32
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
10
hours of sunshine
UV8
UV index (Very High)
43
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
27
kph wind from W

Boston weather for Thursday 21st May 2026

Expect broken clouds in Boston, Massachusetts with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north.

18
°C maximum temperature
13
°C minimum temperature
broken clouds
7
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from N

Boston weather for Friday 22nd May 2026

Expect broken clouds in Boston, Massachusetts with a maximum temperature of 17°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north.

17
°C maximum temperature
10
°C minimum temperature
broken clouds
7
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
17
°C wind chill
15
kph wind from N

Boston weather for Saturday 23rd May 2026

Expect overcast skies in Boston, Massachusetts with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the east.

17
°C maximum temperature
10
°C minimum temperature
overcast skies
0
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from E

Boston weather for Sunday 24th May 2026

Expect scattered clouds in Boston, Massachusetts with a maximum temperature of 17°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the east.