06420 Weather (Colchester, CT)

Weather forecast for: Colchester CT

Last Update: 7:01 am EDT Sep 19, 2026

This Afternoon: Mostly sunny, with a high near 69. Northeast wind around 5 mph becoming calm.

Tonight: Increasing clouds, with a low around 49. Light and variable wind.

Sunday: Rain, mainly after 2pm. High near 65. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Sunday Night: Rain, mainly before 2am. Low around 51. Light and variable wind becoming north around 6 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

Monday: A 30 percent chance of rain before 8am. Partly sunny, with a high near 66. Northeast wind 7 to 11 mph, with gusts as high as 22 mph.

Monday Night: Mostly cloudy, with a low around 46.

Tuesday: Mostly cloudy, with a high near 62.

Tuesday Night: Mostly cloudy, with a low around 45.

Wednesday: Partly sunny, with a high near 64.

Wednesday Night: Mostly cloudy, with a low around 46.

Thursday: A 30 percent chance of showers. Mostly cloudy, with a high near 63.

Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 47.

Friday: A 30 percent chance of showers. Partly sunny, with a high near 64.