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

Today: Showers likely, with thunderstorms also possible after 5pm. Cloudy, with a high near 79. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Cloudy
then Showers
Likely
 Tonight

Tonight: Showers and possibly a thunderstorm. Patchy fog. Low around 61. Southeast wind 6 to 9 mph, with gusts as high as 20 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 likely and possibly a thunderstorm before noon, then a chance of showers. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 79. Light and variable wind becoming northwest 5 to 8 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Showers
Likely and
Patchy Fog
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 58. Northwest wind around 5 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 83. Northwest wind 6 to 9 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 58. Light west wind.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Mostly Sunny

 Thursday
Night
Thursday Night: A chance of showers after midnight. Mostly cloudy, with a low around 61. South wind 3 to 6 mph. Chance of precipitation is 40%.
Partly Cloudy
then Chance
Showers
 Friday

Friday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. South wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Chance
Showers then
Chance
T-storms
Hi 79 °F Lo 61 °F Hi 79 °F Lo 58 °F Hi 83 °F Lo 58 °F Hi 86 °F Lo 61 °F Hi 82 °F

 

Today
 
 Showers likely, with thunderstorms also possible after 5pm. Cloudy, with a high near 79. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 Showers and possibly a thunderstorm. Patchy fog. Low around 61. Southeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
 Showers likely and possibly a thunderstorm before noon, then a chance of showers. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 79. Light and variable wind becoming northwest 5 to 8 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
 
 Mostly clear, with a low around 58. Northwest wind around 5 mph.
Wednesday
 
 Sunny, with a high near 83. Northwest wind 6 to 9 mph.
Wednesday Night
 
 Mostly clear, with a low around 58. Light west wind.
Thursday
 
 Mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Thursday Night
 
 A chance of showers after midnight. Mostly cloudy, with a low around 61. South wind 3 to 6 mph. Chance of precipitation is 40%.
Friday
 
 A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. South wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
 
 A chance of showers. Mostly sunny, with a high near 83. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
 
 Partly cloudy, with a low around 62. Light northwest wind.
Sunday
 
 Sunny, with a high near 85. Calm wind becoming northwest 5 to 7 mph in the afternoon.

 

Forecast from NOAA-NWS for Willimantic CT.