Roy Lake, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roy Lake, a community in Mahnomen County, Minnesota.
This Afternoon
65°F
Mostly Cloudy
Mostly cloudy, with a high near 65. Southeast wind around 10 mph.
7-day forecast for Roy Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Mostly Cloudy | 10 mph SE | 12% |
| Tonight | 52°F | Mostly Cloudy | 6 to 10 mph ESE | 11% |
| Saturday | 68°F | Mostly Cloudy | 7 mph ENE | 2% |
| Saturday Night | 50°F | Mostly Cloudy | 9 mph NE | 0% |
| Sunday | 65°F | Mostly Cloudy | 6 to 9 mph ENE | 0% |
| Sunday Night | 43°F | Mostly Cloudy | 7 mph E | 0% |
| Monday | 64°F | Mostly Sunny | 7 mph ESE | 1% |
| Monday Night | 40°F | Mostly Clear | 7 mph SE | 1% |
| Tuesday | 65°F | Sunny | 9 mph SE | 0% |
| Tuesday Night | 43°F | Mostly Clear | 8 mph SSE | 1% |
| Wednesday | 66°F | Mostly Sunny | 8 to 12 mph SSE | 5% |
| Wednesday Night | 49°F | Partly Cloudy then Slight Chance Rain Showers | 9 mph SSE | 17% |
| Thursday | 69°F | Slight Chance Rain Showers then Partly Sunny | 9 mph S | 17% |
| Thursday Night | 51°F | Partly Cloudy | 7 mph SSE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Roy Lake (47.317, -95.539). Updated through the day.
Growing snapshot for Roy Lake
Last spring frost
May 7
First fall frost
Sep 28
Growing season
143 days
Hardiness zone
3b
More local growing data for Roy Lake: nearby ZIP 56566 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Beaulieu
Bejou
Ebro
Elbow Lake
Lengby
Mahnomen
Midway
Naytahwaush
Pine Bend
Riverland
The Ranch
Twin Lakes
West Roy Lake
Climate data from the nearest NOAA station, Mahnomen, Mn (17.8 mi from Roy Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.