National Weather Service Forecast for: Waltham MA
Issued by: National Weather Service Norton, MA
Updated: 12:58 am EST Dec 18, 2025
 
Today

Today: Sunny, with a high near 48. Calm wind becoming south 5 to 7 mph in the afternoon.
Sunny

 Tonight

Tonight: A chance of rain after 3am. Increasing clouds, with a temperature rising to around 51 by 5am. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Mostly Cloudy
then Chance
Rain
 Friday

Friday: Rain, mainly before 5pm. High near 58. Breezy, with a south wind 15 to 23 mph becoming west in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Rain and
Breezy

 Friday
Night
Friday Night: A chance of rain, mainly before 7pm. Partly cloudy, with a low around 26. Breezy, with a west wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
and Breezy
then Mostly
Clear
 Saturday

Saturday: Mostly sunny, with a high near 39. West wind 6 to 13 mph, with gusts as high as 23 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: Cloudy, with a low around 32. South wind 6 to 10 mph, with gusts as high as 20 mph.
Cloudy

 Sunday

Sunday: Partly sunny, with a high near 46. West wind around 10 mph, with gusts as high as 23 mph.
Partly Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 22. West wind around 10 mph, with gusts as high as 20 mph.
Partly Cloudy

 Monday

Monday: Sunny, with a high near 30. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Sunny
Hi 48 °F Lo 41 °F⇑ Hi 58 °F Lo 26 °F Hi 39 °F Lo 32 °F Hi 46 °F Lo 22 °F Hi 30 °F

Wind Advisory
 

Today
 
 Sunny, with a high near 48. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
 
 A chance of rain after 3am. Increasing clouds, with a temperature rising to around 51 by 5am. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
 Rain, mainly before 5pm. High near 58. Breezy, with a south wind 15 to 23 mph becoming west in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
 
 A chance of rain, mainly before 7pm. Partly cloudy, with a low around 26. Breezy, with a west wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 Mostly sunny, with a high near 39. West wind 6 to 13 mph, with gusts as high as 23 mph.
Saturday Night
 
 Cloudy, with a low around 32. South wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
 
 Partly sunny, with a high near 46. West wind around 10 mph, with gusts as high as 23 mph.
Sunday Night
 
 Partly cloudy, with a low around 22. West wind around 10 mph, with gusts as high as 20 mph.
Monday
 
 Sunny, with a high near 30. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Monday Night
 
 Partly cloudy, with a low around 19. Northwest wind around 6 mph.
Tuesday
 
 A chance of rain and snow. Mostly cloudy, with a high near 36. Southwest wind 6 to 8 mph. Chance of precipitation is 50%.
Tuesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 28. Southwest wind around 6 mph. Chance of precipitation is 40%.
Wednesday
 
 Mostly sunny, with a high near 39. Northwest wind 6 to 8 mph.

 

Forecast from NOAA-NWS for Waltham MA.