Mill Plain, CT Weather & Growing Conditions
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. Southeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 6 mph SE | 0% |
| Tonight | 64°F | Mostly Cloudy | 3 mph S | 3% |
| Wednesday | 83°F | Partly Sunny | 2 to 6 mph S | 10% |
| Wednesday Night | 70°F | Slight Chance Rain Showers | 2 to 6 mph S | 24% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 2 to 9 mph SW | 36% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 8 mph SW | 33% |
| Friday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 36% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 35% |
| Saturday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 34% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 3 to 7 mph W | 34% |
| Sunday | 88°F | Mostly Sunny | 3 to 8 mph W | 13% |
| Sunday Night | 71°F | Mostly Clear | 6 mph SW | 10% |
| Monday | 89°F | Sunny | 3 to 10 mph W | 13% |
| Monday Night | 69°F | Slight Chance Rain Showers | 5 to 9 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mill Plain, CT
Last spring frost
Apr 5
First fall frost
Nov 6
Growing season
216 days
Hardiness zone
7a
Explore more for Mill Plain, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Bridgeport Sikorsky Mem Ap, Ct (8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.