Preston, MN Weather & Growing Conditions
This Afternoon
66°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. High near 66, with temperatures falling to around 63 in the afternoon. Southwest wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Chance Rain Showers | 9 mph SW | 50% |
| Tonight | 51°F | Showers And Thunderstorms | 7 to 12 mph E | 93% |
| Wednesday | 53°F | Rain Showers | 9 to 15 mph SW | 75% |
| Wednesday Night | 45°F | Rain Showers | 15 mph W | 89% |
| Thursday | 49°F | Rain Showers Likely | 15 mph NW | 74% |
| Thursday Night | 37°F | Mostly Cloudy | 9 to 13 mph N | 9% |
| Friday | 46°F | Partly Sunny | 3 to 9 mph N | 0% |
| Friday Night | 31°F | Partly Cloudy | 2 mph NW | 0% |
| Saturday | 51°F | Mostly Sunny | 1 to 6 mph SW | 0% |
| Saturday Night | 36°F | Mostly Clear | 5 to 8 mph W | 6% |
| Sunday | 56°F | Sunny | 9 mph W | 11% |
| Sunday Night | 38°F | Mostly Clear | 8 mph SW | 3% |
| Monday | 58°F | Mostly Sunny | 8 to 13 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 8 mph W | 1% |
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 Nov 4, 2026.