National Weather Service Forecast for: Boston MA
Issued by: National Weather Service Norton, MA
Updated: 2:14 am EDT Jun 30, 2026
 
Today

Today: Mostly sunny, with a high near 89. Southwest wind 5 to 13 mph becoming southeast in the afternoon.
Mostly Sunny

Tonight

Tonight: A chance of showers and thunderstorms, mainly after 10pm.  Mostly cloudy, with a low around 72. Southwest wind 13 to 15 mph.  Chance of precipitation is 40%.
Chance
Showers
Wednesday

Wednesday: Partly sunny and hot, with a high near 98. Heat index values as high as 104. Southwest wind around 15 mph.
Hot

Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 79. Southwest wind 7 to 11 mph.  Chance of precipitation is 30%.
Chance
Showers
Thursday

Thursday: Sunny and hot, with a high near 100. West wind around 8 mph.
Hot

Thursday
Night
Thursday Night: Clear, with a low around 80. West wind 5 to 8 mph.
Clear

Friday

Friday: Sunny and hot, with a high near 99. West wind 7 to 11 mph.
Hot

Friday
Night
Friday Night: Mostly clear, with a low around 77. West wind 5 to 7 mph.
Mostly Clear

Independence
Day
Independence Day: A chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 93. West wind 5 to 9 mph.  Chance of precipitation is 40%.
Sunny then
Chance
T-storms
Hi 89 °F Lo 72 °F Hi 98 °F Lo 79 °F Hi 100 °F Lo 80 °F Hi 99 °F Lo 77 °F Hi 93 °F

Extreme Heat Warning
 

Today
 
Mostly sunny, with a high near 89. Southwest wind 5 to 13 mph becoming southeast in the afternoon.
Tonight
 
A chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 72. Southwest wind 13 to 15 mph. Chance of precipitation is 40%.
Wednesday
 
Partly sunny and hot, with a high near 98. Heat index values as high as 104. Southwest wind around 15 mph.
Wednesday Night
 
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 79. Southwest wind 7 to 11 mph. Chance of precipitation is 30%.
Thursday
 
Sunny and hot, with a high near 100. West wind around 8 mph.
Thursday Night
 
Clear, with a low around 80. West wind 5 to 8 mph.
Friday
 
Sunny and hot, with a high near 99. West wind 7 to 11 mph.
Friday Night
 
Mostly clear, with a low around 77. West wind 5 to 7 mph.
Independence Day
 
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. West wind 5 to 9 mph. Chance of precipitation is 40%.
Saturday Night
 
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. West wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday
 
Mostly sunny, with a high near 89. Light and variable wind becoming northeast 5 to 8 mph in the morning.
Sunday Night
 
Partly cloudy, with a low around 68. Southeast wind around 5 mph becoming calm in the evening.
Monday
 
Partly sunny, with a high near 83. Light east wind increasing to 5 to 9 mph in the morning.

 

Forecast from NOAA-NWS for Boston MA.