Colchester, CT Weather & Growing Conditions
Today
82°F
Mostly Sunny
Mostly sunny, with a high near 82. Southwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Mostly Sunny | 3 mph SW | 0% |
| Tonight | 61°F | Mostly Cloudy | 3 mph SW | 4% |
| Wednesday | 82°F | Partly Sunny | 2 to 6 mph W | 6% |
| Wednesday Night | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph S | 20% |
| Thursday | 85°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 9 mph SW | 21% |
| Thursday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 to 8 mph SW | 19% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 27% |
| Friday Night | 70°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 6 mph SW | 26% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 8 mph SW | 33% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 5 mph W | 33% |
| Sunday | 86°F | Mostly Sunny | 1 to 7 mph W | 11% |
| Sunday Night | 70°F | Mostly Clear | 2 to 6 mph SW | 10% |
| Monday | 87°F | Sunny | 2 to 9 mph W | 13% |
| Monday Night | 68°F | Partly Cloudy | 2 to 7 mph W | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Colchester, CT
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6b
Explore more for Colchester, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Norwich Public Utility Plt, Ct (10.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.