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

Today: A chance of showers, mainly after 5pm. Increasing clouds, with a high near 85. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunny then
Chance
Showers
 Tonight

Tonight: Showers likely, mainly between 8pm and 5am. Mostly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm in the evening. 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 before 7am. Mostly cloudy, with a high near 80. Northeast wind 3 to 6 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 chance of showers, mainly after 2am. Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Slight Chance
Showers then
Chance
Showers
 Saturday

Saturday: Showers likely, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Patchy fog before 8am. High near 75. Northeast wind around 7 mph. Chance of precipitation is 80%.
Heavy Rain
and Patchy
Fog
 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Low around 62. Light northeast wind. Chance of precipitation is 80%.
Showers then
Chance
Showers
 Sunday

Sunday: A chance of showers after noon. Mostly cloudy, with a high near 82. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 50%.
Mostly Cloudy
then Chance
Showers
 Sunday
Night
Sunday Night: A chance of showers before 11pm. Mostly cloudy, with a low around 60. Light south wind. Chance of precipitation is 40%.
Chance
Showers then
Partly Cloudy
 Monday

Monday: Mostly sunny, with a high near 82. Calm wind becoming west 5 to 9 mph in the morning.
Mostly Sunny
Hi 85 °F Lo 58 °F Hi 80 °F Lo 60 °F Hi 75 °F Lo 62 °F Hi 82 °F Lo 60 °F Hi 82 °F

 

Today
 
 A chance of showers, mainly after 5pm. Increasing clouds, with a high near 85. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
 Showers likely, mainly between 8pm and 5am. Mostly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 A chance of showers, mainly before 7am. Mostly cloudy, with a high near 80. Northeast wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 A chance of showers, mainly after 2am. Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Showers likely, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Patchy fog before 8am. High near 75. Northeast wind around 7 mph. Chance of precipitation is 80%.
Saturday Night
 
 Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Low around 62. Light northeast wind. Chance of precipitation is 80%.
Sunday
 
 A chance of showers after noon. Mostly cloudy, with a high near 82. Calm 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 60. Light south wind. Chance of precipitation is 40%.
Monday
 
 Mostly sunny, with a high near 82. Calm wind becoming west 5 to 9 mph in the morning.
Monday Night
 
 Mostly clear, with a low around 54. Light west wind.
Tuesday
 
 Sunny, with a high near 81. Calm wind becoming west 5 to 8 mph in the morning.
Tuesday Night
 
 Mostly clear, with a low around 55. Calm wind.
Wednesday
 
 Sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the afternoon.

 

Forecast from NOAA-NWS for Willimantic CT.