Watertown, CT Weather & Growing Conditions
Today
72°F
Sunny
Sunny. High near 72, with temperatures falling to around 66 in the afternoon. Southwest wind 3 to 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Sunny | 3 to 9 mph SW | 2% |
| Tonight | 54°F | Mostly Cloudy | 6 mph S | 2% |
| Thursday | 68°F | Chance Light Rain | 6 to 10 mph S | 43% |
| Thursday Night | 57°F | Light Rain | 2 to 7 mph SW | 76% |
| Friday | 67°F | Light Rain | 3 mph S | 81% |
| Friday Night | 51°F | Light Rain | 2 mph N | 81% |
| Saturday | 62°F | Chance Light Rain | 3 to 7 mph NW | 30% |
| Saturday Night | 42°F | Chance Light Rain | 6 to 9 mph NW | 27% |
| Sunday | 56°F | Slight Chance Light Rain then Mostly Sunny | 5 to 9 mph NW | 21% |
| Sunday Night | 37°F | Partly Cloudy | 5 to 8 mph W | 4% |
| Monday | 54°F | Sunny | 8 to 13 mph W | 11% |
| Monday Night | 35°F | Partly Cloudy | 5 to 8 mph W | 11% |
| Tuesday | 57°F | Mostly Sunny | 7 to 12 mph W | 6% |
| Tuesday Night | 35°F | Mostly Clear | 8 mph W | 5% |
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.