Grenora, ND Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grenora, a city in Williams County, North Dakota.
Today
70°F
Sunny
Sunny, with a high near 70. West wind 5 to 17 mph, with gusts as high as 26 mph.
7-day forecast for Grenora
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Sunny | 5 to 17 mph W | 0% |
| Tonight | 49°F | Mostly Clear | 6 to 15 mph SW | 2% |
| Wednesday | 79°F | Partly Sunny | 10 to 21 mph SW | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 6 to 20 mph W | 6% |
| Thursday | 83°F | Sunny | 6 to 15 mph W | 1% |
| Thursday Night | 53°F | Mostly Clear | 8 to 15 mph N | 2% |
| Friday | 79°F | Sunny | 9 mph NE | 1% |
| Friday Night | 54°F | Partly Cloudy | 8 to 13 mph NE | 4% |
| Saturday | 81°F | Mostly Sunny | 9 to 13 mph NE | 4% |
| Saturday Night | 54°F | Partly Cloudy | 12 to 15 mph NE | 3% |
| Sunday | 79°F | Partly Sunny | 10 to 16 mph NE | 10% |
| Sunday Night | 55°F | Slight Chance Showers And Thunderstorms | 13 to 17 mph NE | 22% |
| Monday | 78°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 12 to 15 mph NE | 22% |
| Monday Night | 55°F | Chance Showers And Thunderstorms | 12 to 16 mph E | 28% |
Forecast source: National Weather Service (api.weather.gov) for Grenora (48.620, -103.937). Updated through the day.
Growing snapshot for Grenora
Last spring frost
May 18
First fall frost
Sep 21
Growing season
125 days
Hardiness zone
3b
More local growing data for Grenora: nearby ZIP 58845 weather · frost dates · planting calendar · North Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Westby, Mt (17.2 mi from Grenora). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.