Grasston, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grasston, a city in Pine County, Minnesota.
Today
75°F
Mostly Sunny
Mostly sunny, with a high near 75. Northwest wind around 10 mph.
7-day forecast for Grasston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny | 10 mph NW | 1% |
| Tonight | 51°F | Partly Cloudy | 0 to 10 mph WNW | 0% |
| Wednesday | 79°F | Sunny | 0 to 10 mph WSW | 0% |
| Wednesday Night | 55°F | Mostly Clear | 5 to 10 mph SW | 1% |
| Thursday | 84°F | Sunny | 5 to 15 mph SSW | 3% |
| Thursday Night | 61°F | Mostly Clear | 5 to 10 mph SSW | 4% |
| Friday | 86°F | Sunny | 5 to 10 mph SW | 12% |
| Friday Night | 59°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 25% |
| Saturday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 17% |
| Saturday Night | 60°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 47% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 5 mph NW | 45% |
| Sunday Night | 59°F | Partly Cloudy | 0 to 5 mph NNE | 14% |
| Monday | 82°F | Slight Chance Rain Showers | 0 to 5 mph NNE | 18% |
| Monday Night | 59°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 21% |
Forecast source: National Weather Service (api.weather.gov) for Grasston (45.797, -93.155). Updated through the day.
Growing snapshot for Grasston
Last spring frost
May 9
First fall frost
Sep 30
Growing season
142 days
Hardiness zone
4a
More local growing data for Grasston: nearby ZIP 55030 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Askov
Bruno
Denham
Finlayson
Henriette
Hinckley
Kerrick
Pine City
Quamba
Rock Creek
Rutledge
Sandstone
Willow River
Climate data from the nearest NOAA station, Mora, Mn (9.6 mi from Grasston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.