Preston, MN Weather & Growing Conditions
Overnight
59°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a low around 59. Southeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Showers And Thunderstorms Likely | 10 mph SE | 71% |
| Saturday | 65°F | Showers And Thunderstorms Likely | 6 to 9 mph NE | 67% |
| Saturday Night | 55°F | Slight Chance Showers And Thunderstorms then Cloudy | 9 to 13 mph N | 20% |
| Sunday | 66°F | Partly Sunny | 15 mph NE | 7% |
| Sunday Night | 49°F | Mostly Cloudy | 12 mph NE | 9% |
| Monday | 61°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Monday Night | 44°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NE | 16% |
| Tuesday | 60°F | Mostly Sunny | 8 mph NE | 7% |
| Tuesday Night | 42°F | Mostly Clear | 5 mph E | 2% |
| Wednesday | 63°F | Sunny | 6 mph E | 1% |
| Wednesday Night | 47°F | Mostly Clear | 3 mph SE | 4% |
| Thursday | 65°F | Mostly Sunny | 5 mph E | 8% |
| Thursday Night | 50°F | Partly Cloudy | 2 mph SE | 4% |
| Friday | 67°F | Mostly Sunny | 5 mph SE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Preston, MN
Last spring frost
May 14
First fall frost
Sep 28
Growing season
136 days
Hardiness zone
4b
Explore more for Preston, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Preston, Mn (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.