06791 Weather (Harwinton, CT)

Weather forecast for: Harwinton CT

Last Update: 2:36 pm EDT Oct 15, 2026

Tonight: A chance of showers, mainly after 4am. Increasing clouds, with a low around 44. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday: Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 5pm. High near 67. South wind 9 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers after 3am. Low around 43. West wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 46. Northwest wind 13 to 15 mph, with gusts as high as 31 mph.

Saturday Night: Mostly clear, with a low around 29. Northwest wind 3 to 8 mph.

Sunday: Sunny, with a high near 52.

Sunday Night: Clear, with a low around 34.

Monday: Sunny, with a high near 59.

Monday Night: Mostly clear, with a low around 38.

Tuesday: Mostly sunny, with a high near 62.

Tuesday Night: Partly cloudy, with a low around 42.

Wednesday: Sunny, with a high near 60.

Wednesday Night: Mostly clear, with a low around 39.

Thursday: Sunny, with a high near 56.