National Weather Service Forecast for: Weymouth MA
Issued by: National Weather Service Norton, MA
Updated: 2:31 am EDT Aug 20, 2026
 
Today

Today: Increasing clouds, with a high near 87. Calm wind becoming east around 6 mph in the afternoon.
Increasing
Clouds
 Tonight

Tonight: Showers likely, mainly after 10pm. Mostly cloudy, with a low around 63. Calm wind becoming northwest around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Showers
Likely
 Friday

Friday: A chance of showers. Partly sunny, with a high near 77. Northeast wind 7 to 9 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Chance
Showers
 Friday
Night
Friday Night: A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 62. Northeast wind 3 to 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers
 Saturday

Saturday: Showers, with thunderstorms also possible after 2pm. Some of the storms could produce heavy rainfall. Patchy fog between 7am and 8am. High near 75. Northeast wind around 9 mph. Chance of precipitation is 90%.
Heavy Rain
and Patchy
Fog
 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm before 11pm, then a chance of showers. Low around 64. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Showers then
Chance
Showers
 Sunday

Sunday: A chance of showers. Mostly cloudy, with a high near 82. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.
Chance
Showers
 Sunday
Night
Sunday Night: A chance of showers before 10pm. Mostly cloudy, with a low around 65. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Chance
Showers then
Mostly Cloudy
 Monday

Monday: Mostly sunny, with a high near 84. West wind 6 to 9 mph.
Mostly Sunny
Hi 87 °F Lo 63 °F Hi 77 °F Lo 62 °F Hi 75 °F Lo 64 °F Hi 82 °F Lo 65 °F Hi 84 °F

 

Today
 
 Increasing clouds, with a high near 87. Calm wind becoming east around 6 mph in the afternoon.
Tonight
 
 Showers likely, mainly after 10pm. Mostly cloudy, with a low around 63. Calm wind becoming northwest around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 A chance of showers. Partly sunny, with a high near 77. Northeast wind 7 to 9 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
 
 A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 62. Northeast wind 3 to 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 Showers, with thunderstorms also possible after 2pm. Some of the storms could produce heavy rainfall. Patchy fog between 7am and 8am. High near 75. Northeast wind around 9 mph. Chance of precipitation is 90%.
Saturday Night
 
 Showers and possibly a thunderstorm before 11pm, then a chance of showers. Low around 64. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Sunday
 
 A chance of showers. Mostly cloudy, with a high near 82. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.
Sunday Night
 
 A chance of showers before 10pm. Mostly cloudy, with a low around 65. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Monday
 
 Mostly sunny, with a high near 84. West wind 6 to 9 mph.
Monday Night
 
 Mostly clear, with a low around 60. West wind around 6 mph.
Tuesday
 
 Sunny, with a high near 82. West wind 6 to 9 mph.
Tuesday Night
 
 Mostly clear, with a low around 60. Southwest wind around 5 mph.
Wednesday
 
 Sunny, with a high near 84. Southwest wind 5 to 7 mph.

 

Forecast from NOAA-NWS for Weymouth MA.