McGrath, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McGrath, a city in Aitkin County, Minnesota.
Tonight
49°F
Chance Drizzle
A chance of drizzle before 11pm, then a chance of drizzle and patchy fog between 11pm and 5am, then patchy fog and a slight chance of drizzle. Cloudy, with a low around 49. East wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for McGrath
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Chance Drizzle | 5 mph E | 36% |
| Saturday | 63°F | Patchy Fog then Mostly Cloudy | 5 mph NE | 17% |
| Saturday Night | 47°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Sunday | 64°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Sunday Night | 41°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 62°F | Partly Sunny | 5 mph E | 0% |
| Monday Night | 38°F | Partly Cloudy | 0 to 5 mph E | 1% |
| Tuesday | 64°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Tuesday Night | 39°F | Mostly Clear | 0 to 5 mph E | 0% |
| Wednesday | 65°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 43°F | Partly Cloudy | 0 mph | 12% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph S | 12% |
| Thursday Night | 46°F | Partly Cloudy | 0 mph | 7% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph E | 6% |
Forecast source: National Weather Service (api.weather.gov) for McGrath (46.242, -93.275). Updated through the day.
Growing snapshot for McGrath
Last spring frost
May 10
First fall frost
Oct 3
Growing season
144 days
Hardiness zone
4a
More local growing data for McGrath: nearby ZIP 56350 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Isle 12N, Mn (13 mi from McGrath). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.