Newtown, CT Weather & Growing Conditions
Today
82°F
Sunny
Sunny, with a high near 82. West wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 3 mph W | 0% |
| Tonight | 61°F | Mostly Cloudy | 3 mph SW | 1% |
| Wednesday | 81°F | Partly Sunny | 2 to 6 mph SW | 11% |
| Wednesday Night | 68°F | Slight Chance Rain Showers | 5 mph S | 22% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 2 to 8 mph SW | 60% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph SW | 52% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 46% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 5 mph W | 43% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph W | 39% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph W | 39% |
| Sunday | 86°F | Mostly Sunny | 2 to 7 mph W | 11% |
| Sunday Night | 69°F | Mostly Clear | 2 to 6 mph SW | 10% |
| Monday | 87°F | Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph W | 16% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Newtown, CT
Last spring frost
Apr 20
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6b
Explore more for Newtown, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Danbury, Ct (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.