Grasston, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grasston, a city in Pine County, Minnesota.
Tonight
51°F
Rain Showers
Rain showers and patchy fog before 1am, then a chance of drizzle and patchy fog between 1am and 5am. Cloudy, with a low around 51. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Grasston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Rain Showers | 5 to 10 mph E | 78% |
| Saturday | 63°F | Cloudy | 5 to 10 mph NE | 12% |
| Saturday Night | 47°F | Partly Cloudy | 5 to 10 mph NE | 2% |
| Sunday | 66°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Sunday Night | 43°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Monday | 64°F | Partly Sunny | 5 mph ENE | 2% |
| Monday Night | 39°F | Partly Cloudy | 0 to 5 mph ENE | 1% |
| Tuesday | 65°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Tuesday Night | 40°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Wednesday | 66°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 44°F | Partly Cloudy | 0 mph | 10% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph S | 13% |
| Thursday Night | 46°F | Partly Cloudy | 0 mph | 7% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph SE | 7% |
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 Sep 19, 2026.