Watertown, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Watertown, a city in Carver County, Minnesota.
Today
73°F
Mostly Sunny then Patchy Smoke
Patchy smoke between 4pm and 5pm. Mostly sunny, with a high near 73. West northwest wind 5 to 10 mph.
7-day forecast for Watertown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny then Patchy Smoke | 5 to 10 mph WNW | 4% |
| Tonight | 54°F | Partly Cloudy | 0 to 10 mph WNW | 2% |
| Wednesday | 75°F | Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 80°F | Sunny | 5 to 15 mph SSW | 0% |
| Thursday Night | 63°F | Mostly Clear | 10 mph SSW | 2% |
| Friday | 83°F | Sunny | 10 mph SSW | 7% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 20% |
| Saturday | 82°F | Sunny | 5 to 10 mph S | 14% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 5 mph SSW | 50% |
| Sunday | 81°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 50% |
| Sunday Night | 64°F | Partly Cloudy | 5 mph NNE | 14% |
| Monday | 80°F | Slight Chance Rain Showers | 5 to 10 mph NE | 20% |
| Monday Night | 64°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph NNE | 21% |
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 Aug 4, 2026.