Boston weather live forecast

Today's maximum temperature in Boston is expected to be 21°C. Select a day from the live weather forecast for Boston, Massachusetts, USA for more weather parameters.

Thursday
21st May
21

14

2

UV5
Friday
22nd May
17

12

10

UV7
Saturday
23rd May
19

13

0

UV4
Sunday
24th May
14

13

0

UV2
Monday
25th May
20

14

0

UV4

5-day weather forecast updated at 04:00 on Thursday 21st 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 Thursday 21st May 2026

Expect broken clouds in Boston, Massachusetts with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north.

21
°C maximum temperature
14
°C minimum temperature
broken clouds
2
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from N

Boston weather for Friday 22nd May 2026

Expect scattered clouds in Boston, Massachusetts with a maximum temperature of 17°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the east.

17
°C maximum temperature
12
°C minimum temperature
scattered clouds
10
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
17
°C wind chill
17
kph wind from E

Boston weather for Saturday 23rd May 2026

Expect overcast skies in Boston, Massachusetts with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the east.

19
°C maximum temperature
13
°C minimum temperature
overcast skies
0
hours of sunshine
UV4
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
17
kph wind from E

Boston weather for Sunday 24th May 2026

Expect cloudy with some rain in Boston, Massachusetts with a maximum temperature of 14°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 50% chance of some rain and a moderate breeze of 21 kph from the east.

14
°C maximum temperature
13
°C minimum temperature
cloudy with some rain
0
hours of sunshine
UV2
UV index (Low)
50
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
21
kph wind from E

Boston weather for Monday 25th May 2026

Expect cloudy with some rain in Boston, Massachusetts with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 41% chance of some rain and a gentle breeze of 16 kph from the north-east.