Preston, MN Weather & Growing Conditions
Today
73°F
Scattered Rain Showers then Isolated Showers And Thunderstorms
Scattered rain showers before 10am, then isolated showers and thunderstorms between 4pm and 5pm, then scattered showers and thunderstorms. Mostly cloudy. High near 73, with temperatures falling to around 70 in the afternoon. West wind 7 to 13 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Scattered Rain Showers then Isolated Showers And Thunderstorms | 7 to 13 mph W | 39% |
| Tonight | 58°F | Scattered Showers And Thunderstorms | 3 to 7 mph W | 52% |
| Wednesday | 73°F | Mostly Sunny | 5 mph NW | 2% |
| Wednesday Night | 55°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 77°F | Sunny | 2 to 6 mph SW | 0% |
| Thursday Night | 61°F | Mostly Clear | 7 mph S | 1% |
| Friday | 80°F | Sunny | 7 to 12 mph SW | 9% |
| Friday Night | 64°F | Mostly Clear | 10 mph SW | 11% |
| Saturday | 81°F | Mostly Sunny | 9 mph S | 11% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 10 mph SW | 37% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 37% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 8 mph E | 38% |
| Monday | 80°F | Chance Rain Showers | 6 to 9 mph SE | 38% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 8 mph N | 29% |
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 Aug 4, 2026.