National Weather Service Forecast for: Waltham MA
Issued by: National Weather Service Norton, MA
Updated: 5:35 am EDT Jun 22, 2026
 
Today

Today: Showers likely, mainly after 5pm. Mostly cloudy, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Partly Sunny
then Showers
Likely
 Tonight

Tonight: Showers and possibly a thunderstorm. Patchy fog after 9pm. Low around 61. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and
Patchy Fog
 Tuesday

Tuesday: Showers and possibly a thunderstorm before 11am, then showers likely. Patchy fog before 1pm. High near 78. South wind 5 to 8 mph becoming northwest in the morning. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Showers and
Patchy Fog
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 60. Northwest wind 3 to 5 mph.
Partly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 84. Northwest wind 6 to 9 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 62. West wind 3 to 5 mph.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Mostly Sunny

 Thursday
Night
Thursday Night: A chance of showers after 1am. Mostly cloudy, with a low around 63. South wind around 5 mph. Chance of precipitation is 40%.
Mostly Cloudy
then Chance
Showers
 Friday

Friday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Showers
Likely
Hi 80 °F Lo 61 °F Hi 78 °F Lo 60 °F Hi 84 °F Lo 62 °F Hi 86 °F Lo 63 °F Hi 82 °F

 

Today
 
 Showers likely, mainly after 5pm. Mostly cloudy, with a high near 80. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
 
 Showers and possibly a thunderstorm. Patchy fog after 9pm. Low around 61. Southeast wind 6 to 8 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
 Showers and possibly a thunderstorm before 11am, then showers likely. Patchy fog before 1pm. High near 78. South wind 5 to 8 mph becoming northwest in the morning. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
 
 Partly cloudy, with a low around 60. Northwest wind 3 to 5 mph.
Wednesday
 
 Sunny, with a high near 84. Northwest wind 6 to 9 mph.
Wednesday Night
 
 Mostly clear, with a low around 62. West wind 3 to 5 mph.
Thursday
 
 Mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
 
 A chance of showers after 1am. Mostly cloudy, with a low around 63. South wind around 5 mph. Chance of precipitation is 40%.
Friday
 
 Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.
Saturday
 
 Mostly sunny, with a high near 84. West wind 5 to 8 mph.
Saturday Night
 
 Partly cloudy, with a low around 65. West wind 3 to 5 mph.
Sunday
 
 Sunny, with a high near 86. Northwest wind 5 to 8 mph.

 

Forecast from NOAA-NWS for Waltham MA.