Watertown, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Watertown, a city in Carver County, Minnesota.
Overnight
57°F
Chance Drizzle
A chance of drizzle. Cloudy, with a low around 57. East northeast wind around 10 mph. Chance of precipitation is 40%.
7-day forecast for Watertown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Chance Drizzle | 10 mph ENE | 36% |
| Saturday | 62°F | Chance Drizzle then Patchy Fog | 5 to 10 mph NE | 32% |
| Saturday Night | 52°F | Mostly Cloudy | 5 to 10 mph NNE | 6% |
| Sunday | 65°F | Mostly Cloudy | 5 to 15 mph NE | 1% |
| Sunday Night | 48°F | Mostly Cloudy | 5 to 10 mph NE | 2% |
| Monday | 64°F | Partly Sunny | 5 mph ENE | 4% |
| Monday Night | 44°F | Partly Cloudy | 0 to 5 mph ENE | 4% |
| Tuesday | 64°F | Sunny | 5 mph E | 2% |
| Tuesday Night | 43°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Wednesday | 66°F | Sunny | 0 to 5 mph SE | 1% |
| Wednesday Night | 47°F | Mostly Clear | 0 to 5 mph SE | 7% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph SE | 9% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph SE | 5% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph SE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Watertown (44.960, -93.844). Updated through the day.
Growing snapshot for Watertown
Last spring frost
Apr 30
First fall frost
Oct 8
Growing season
159 days
Hardiness zone
4b
More local growing data for Watertown: nearby ZIP 55388 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Delano, Mn (7.3 mi from Watertown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.