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

Today: Increasing clouds, with a high near 85. West wind 3 to 6 mph.
Increasing
Clouds

 Tonight

Tonight: Showers likely, mainly between 10pm and 5am. Mostly cloudy, with a low around 60. Light and variable wind becoming northwest around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Showers
Likely

 Friday

Friday: A chance of showers, mainly after 9am. Mostly cloudy, with a high near 78. Northeast wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

 Friday
Night
Friday Night: A slight chance of showers before 9pm, then showers likely after 10pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 60. Northeast wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Chance
Showers then
Showers
Likely and
Patchy Fog
 Saturday

Saturday: Showers, with thunderstorms also possible after 2pm. Some of the storms could produce heavy rainfall. Patchy fog before 8am. High near 74. Northeast wind around 7 mph. Chance of precipitation is 90%.
Heavy Rain
and Patchy
Fog

 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 62. Northeast wind 3 to 5 mph. Chance of precipitation is 80%.
Showers then
Chance
Showers

 Sunday

Sunday: A chance of showers after 8am. Partly sunny, with a high near 81. Light and variable wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 50%.
Chance
Showers

 Sunday
Night
Sunday Night: A chance of showers before 11pm. Mostly cloudy, with a low around 62. Southwest wind 3 to 5 mph. Chance of precipitation is 40%.
Chance
Showers then
Mostly Cloudy

 Monday

Monday: Mostly sunny, with a high near 80. West wind 5 to 8 mph.
Mostly Sunny
Hi 85 °F Lo 60 °F Hi 78 °F Lo 60 °F Hi 74 °F Lo 62 °F Hi 81 °F Lo 62 °F Hi 80 °F

 

Today
 
 Increasing clouds, with a high near 85. West wind 3 to 6 mph.
Tonight
 
 Showers likely, mainly between 10pm and 5am. Mostly cloudy, with a low around 60. Light and variable wind becoming northwest around 5 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 A chance of showers, mainly after 9am. Mostly cloudy, with a high near 78. Northeast wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 A slight chance of showers before 9pm, then showers likely after 10pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 60. Northeast wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Showers, with thunderstorms also possible after 2pm. Some of the storms could produce heavy rainfall. Patchy fog before 8am. High near 74. Northeast wind around 7 mph. Chance of precipitation is 90%.
Saturday Night
 
 Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 62. Northeast wind 3 to 5 mph. Chance of precipitation is 80%.
Sunday
 
 A chance of showers after 8am. Partly sunny, with a high near 81. Light and variable wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 50%.
Sunday Night
 
 A chance of showers before 11pm. Mostly cloudy, with a low around 62. Southwest wind 3 to 5 mph. Chance of precipitation is 40%.
Monday
 
 Mostly sunny, with a high near 80. West wind 5 to 8 mph.
Monday Night
 
 Mostly clear, with a low around 57. West wind around 5 mph.
Tuesday
 
 Sunny, with a high near 79. West wind 6 to 8 mph.
Tuesday Night
 
 Mostly clear, with a low around 57. West wind around 5 mph.
Wednesday
 
 Sunny, with a high near 80. Southwest wind 5 to 7 mph.

 

Forecast from NOAA-NWS for Harmony RI.