Watertown, CT Weather & Growing Conditions
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Southwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 3 mph SW | 5% |
| Wednesday | 70°F | Sunny | 2 to 10 mph SW | 3% |
| Wednesday Night | 54°F | Mostly Cloudy | 3 to 8 mph SW | 5% |
| Thursday | 66°F | Chance Rain Showers | 7 to 10 mph SW | 49% |
| Thursday Night | 59°F | Rain Showers | 2 to 6 mph SW | 80% |
| Friday | 66°F | Rain Showers then Rain | 5 mph S | 80% |
| Friday Night | 53°F | Rain | 5 mph N | 80% |
| Saturday | 62°F | Chance Light Rain | 7 mph NW | 52% |
| Saturday Night | 41°F | Chance Light Rain | 7 mph NW | 25% |
| Sunday | 57°F | Slight Chance Light Rain then Mostly Sunny | 5 to 8 mph W | 23% |
| Sunday Night | 36°F | Partly Cloudy then Slight Chance Light Rain | 5 to 8 mph W | 15% |
| Monday | 55°F | Chance Light Rain | 8 to 14 mph NW | 28% |
| Monday Night | 36°F | Chance Light Rain | 9 mph W | 28% |
| Tuesday | 57°F | Slight Chance Light Rain then Mostly Sunny | 13 mph W | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Watertown, CT
Last spring frost
Apr 25
First fall frost
Oct 18
Growing season
172 days
Hardiness zone
6b
Explore more for Watertown, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Burlington, Ct (15.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.