Watertown, CT Weather & Growing Conditions
Today
66°F
Mostly Sunny
Mostly sunny, with a high near 66. Northeast wind 2 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Mostly Sunny | 2 to 7 mph NE | 0% |
| Tonight | 48°F | Mostly Cloudy | 2 mph SE | 3% |
| Sunday | 61°F | Rain | 2 to 7 mph SE | 96% |
| Sunday Night | 50°F | Rain then Rain Showers Likely | 3 to 12 mph E | 91% |
| Monday | 64°F | Partly Sunny | 7 to 12 mph N | 14% |
| Monday Night | 45°F | Mostly Cloudy | 5 to 9 mph NE | 5% |
| Tuesday | 59°F | Mostly Cloudy | 10 mph NE | 8% |
| Tuesday Night | 44°F | Mostly Cloudy | 7 to 14 mph NE | 7% |
| Wednesday | 61°F | Partly Sunny | 12 to 15 mph NE | 6% |
| Wednesday Night | 44°F | Mostly Cloudy then Chance Rain Showers | 12 to 16 mph NE | 25% |
| Thursday | 59°F | Chance Rain Showers | 13 to 18 mph NE | 30% |
| Thursday Night | 45°F | Chance Rain Showers | 14 to 17 mph N | 37% |
| Friday | 61°F | Chance Rain Showers | 12 to 17 mph N | 35% |
| Friday Night | 46°F | Chance Rain Showers | 14 to 17 mph N | 33% |
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 Sep 19, 2026.