Mill Plain, CT Weather & Growing Conditions
Today
72°F
Sunny
Sunny. High near 72, with temperatures falling to around 64 in the afternoon. South wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Sunny | 5 to 8 mph S | 0% |
| Tonight | 56°F | Partly Cloudy | 2 to 6 mph S | 0% |
| Thursday | 70°F | Mostly Cloudy | 5 to 10 mph S | 10% |
| Thursday Night | 60°F | Rain Showers Likely | 3 to 8 mph SW | 68% |
| Friday | 68°F | Rain Showers | 2 to 6 mph S | 89% |
| Friday Night | 53°F | Showers And Thunderstorms | 3 mph NE | 77% |
| Saturday | 65°F | Mostly Sunny | 5 to 8 mph NW | 14% |
| Saturday Night | 43°F | Chance Light Rain | 9 mph W | 25% |
| Sunday | 58°F | Slight Chance Light Rain then Mostly Sunny | 10 mph NW | 16% |
| Sunday Night | 39°F | Partly Cloudy | 6 to 9 mph W | 4% |
| Monday | 57°F | Sunny | 9 to 14 mph W | 12% |
| Monday Night | 38°F | Mostly Clear | 6 to 9 mph W | 12% |
| Tuesday | 60°F | Sunny | 8 to 13 mph W | 4% |
| Tuesday Night | 39°F | Mostly Clear | 9 mph W | 1% |
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 Nov 4, 2026.