Watertown, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Watertown, a community in Litchfield County, Connecticut.
This Afternoon
76°F
Sunny
Sunny, with a high near 76. North wind around 9 mph.
7-day forecast for Watertown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 9 mph N | 0% |
| Tonight | 49°F | Partly Cloudy | 7 mph N | 0% |
| Saturday | 67°F | Mostly Sunny | 2 to 6 mph NE | 0% |
| Saturday Night | 51°F | Mostly Cloudy | 2 mph SE | 2% |
| Sunday | 63°F | Rain Showers | 2 to 7 mph SE | 93% |
| Sunday Night | 54°F | Rain Showers | 3 to 12 mph NE | 93% |
| Monday | 64°F | Chance Rain Showers | 7 to 12 mph NE | 32% |
| Monday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 13 mph NE | 22% |
| Tuesday | 59°F | Slight Chance Rain Showers | 9 to 14 mph NE | 23% |
| Tuesday Night | 46°F | Mostly Cloudy | 9 to 15 mph NE | 9% |
| Wednesday | 60°F | Partly Sunny then Slight Chance Rain Showers | 12 to 17 mph NE | 15% |
| Wednesday Night | 46°F | Chance Rain Showers | 12 to 17 mph NE | 25% |
| Thursday | 59°F | Chance Rain Showers | 12 to 17 mph NE | 30% |
| Thursday Night | 48°F | Chance Rain Showers | 10 to 17 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov) for Watertown (41.601, -73.121). Updated through the day.
Growing snapshot for Watertown
Last spring frost
Apr 25
First fall frost
Oct 18
Growing season
172 days
Hardiness zone
6b
More local growing data for Watertown: nearby ZIP 06795 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Bantam
Bethlehem Village
Bridgewater
Canaan
Cornwall
Cornwall Bridge
Falls Village
Gaylordsville
Lakeville
Litchfield
New Hartford Center
New Milford
New Preston
Norfolk
Northwest Harwinton
Oakville
Pleasant Valley
Sharon
Terryville
Thomaston
Torrington
West Cornwall
Winsted
Woodbury Center
Climate data from the nearest NOAA station, Burlington, Ct (15.5 mi from Watertown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.