Watertown, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Watertown, a community in Litchfield County, Connecticut.
This Afternoon
68°F
Mostly Cloudy
Mostly cloudy. High near 68, with temperatures falling to around 62 in the afternoon. Southwest wind around 6 mph.
7-day forecast for Watertown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Mostly Cloudy | 6 mph SW | 2% |
| Tonight | 49°F | Partly Cloudy | 3 mph SW | 5% |
| Wednesday | 71°F | Sunny | 2 to 12 mph SW | 3% |
| Wednesday Night | 54°F | Mostly Cloudy | 3 to 8 mph SW | 5% |
| Thursday | 67°F | Chance Rain Showers | 7 to 10 mph SW | 48% |
| Thursday Night | 59°F | Rain Showers | 2 to 6 mph SW | 80% |
| Friday | 66°F | Rain Showers then Rain | 2 to 6 mph S | 81% |
| Friday Night | 53°F | Rain | 5 mph NW | 81% |
| Saturday | 63°F | Chance Light Rain | 8 mph NW | 52% |
| Saturday Night | 41°F | Slight Chance Light Rain | 7 mph NW | 24% |
| Sunday | 58°F | Slight Chance Light Rain then Mostly Sunny | 5 to 9 mph W | 23% |
| Sunday Night | 37°F | Partly Cloudy then Slight Chance Light Rain | 3 to 8 mph W | 15% |
| Monday | 56°F | Chance Light Rain | 8 to 14 mph NW | 28% |
| Monday Night | 36°F | Chance Light Rain | 7 to 10 mph W | 28% |
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 Nov 3, 2026.