Glen Ullin, ND Weather & Growing Conditions
Today
74°F
Sunny
Sunny, with a high near 74. West wind 8 to 15 mph, with gusts as high as 24 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Sunny | 8 to 15 mph W | 0% |
| Tonight | 46°F | Mostly Clear | 1 to 13 mph W | 0% |
| Wednesday | 83°F | Mostly Sunny | 3 to 12 mph W | 0% |
| Wednesday Night | 52°F | Mostly Clear | 2 to 10 mph SW | 1% |
| Thursday | 88°F | Sunny | 3 to 9 mph W | 0% |
| Thursday Night | 56°F | Mostly Clear | 3 to 9 mph E | 0% |
| Friday | 87°F | Sunny | 5 to 10 mph N | 0% |
| Friday Night | 56°F | Mostly Clear | 8 mph E | 0% |
| Saturday | 91°F | Sunny | 6 to 12 mph NE | 0% |
| Saturday Night | 56°F | Mostly Clear | 5 to 12 mph NE | 2% |
| Sunday | 88°F | Mostly Sunny | 5 to 14 mph E | 12% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 9 to 13 mph E | 33% |
| Monday | 85°F | Chance Showers And Thunderstorms | 9 to 14 mph NE | 33% |
| Monday Night | 56°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 to 14 mph E | 33% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Glen Ullin, ND
Last spring frost
May 19
First fall frost
Sep 21
Growing season
123 days
Hardiness zone
4a
Explore more for Glen Ullin, ND: full frost dates · planting calendar · North Dakota frost dates
Climate data from the nearest NOAA station, Hebron, Nd (12.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.