Preston, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Preston, a city in Fillmore County, Minnesota.
Today
75°F
Mostly Cloudy then Isolated Showers And Thunderstorms
Isolated rain showers between 3pm and 4pm, then isolated showers and thunderstorms between 4pm and 5pm, then scattered showers and thunderstorms. Mostly cloudy. High near 75, with temperatures falling to around 72 in the afternoon. Northwest wind 7 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Preston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Cloudy then Isolated Showers And Thunderstorms | 7 to 10 mph NW | 33% |
| Tonight | 57°F | Scattered Rain Showers | 3 to 7 mph W | 47% |
| Wednesday | 75°F | Mostly Sunny | 5 mph NW | 2% |
| Wednesday Night | 55°F | Mostly Clear | 3 mph W | 0% |
| Thursday | 79°F | Sunny | 1 to 6 mph SW | 0% |
| Thursday Night | 60°F | Mostly Clear | 6 mph S | 1% |
| Friday | 82°F | Sunny | 6 to 12 mph SW | 9% |
| Friday Night | 64°F | Mostly Clear | 7 to 10 mph SW | 11% |
| Saturday | 82°F | Mostly Sunny | 6 to 9 mph SW | 12% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 9 mph SW | 38% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 10 mph SW | 38% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 5 to 8 mph E | 38% |
| Monday | 82°F | Chance Rain Showers | 5 to 8 mph SE | 38% |
| Monday Night | 65°F | Chance Rain Showers | 5 to 8 mph N | 28% |
Forecast source: National Weather Service (api.weather.gov) for Preston (43.673, -92.083). Updated through the day.
Growing snapshot for Preston
Last spring frost
May 14
First fall frost
Sep 28
Growing season
136 days
Hardiness zone
4b
More local growing data for Preston: nearby ZIP 55965 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Canton
Chatfield
Fountain
Harmony
Lanesboro
Mabel
Peterson
Rushford
Rushford Village
Spring Valley
Whalan
Wykoff
Climate data from the nearest NOAA station, Preston, Mn (4.3 mi from Preston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.