Ulm, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ulm, a community in Cascade County, Montana.
Overnight
42°F
Mostly Clear
Mostly clear, with a low around 42. South wind around 1 mph.
7-day forecast for Ulm
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Mostly Clear | 1 mph S | 0% |
| Tuesday | 79°F | Sunny | 1 to 6 mph E | 0% |
| Tuesday Night | 47°F | Mostly Clear | 3 to 8 mph SE | 1% |
| Wednesday | 87°F | Sunny | 5 mph WSW | 0% |
| Wednesday Night | 50°F | Clear | 7 mph SW | 0% |
| Thursday | 95°F | Sunny | 3 to 9 mph W | 0% |
| Thursday Night | 54°F | Clear | 3 to 8 mph E | 0% |
| Friday | 99°F | Sunny | 2 to 18 mph WSW | 0% |
| Friday Night | 56°F | Mostly Clear | 6 to 17 mph W | 0% |
| Saturday | 95°F | Sunny | 3 to 9 mph WSW | 0% |
| Saturday Night | 56°F | Mostly Clear | 3 to 14 mph WNW | 1% |
| Sunday | 91°F | Sunny | 2 to 8 mph NW | 0% |
| Sunday Night | 55°F | Mostly Clear | 5 to 12 mph N | 3% |
| Monday | 89°F | Sunny | 2 to 7 mph NNW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Ulm (47.421, -111.523). Updated through the day.
Growing snapshot for Ulm
Last spring frost
Jun 2
First fall frost
Sep 10
Growing season
96 days
Hardiness zone
4a
More local growing data for Ulm: nearby ZIP 59485 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Belt
Big Stone Colony
Black Eagle
Cascade
Cascade Colony
Centerville
Fair Haven Colony
Fairfield
Fort Shaw
Gibson Flats
Great Falls
Hardy
Malmstrom AFB
Monarch
Neihart
Pleasant Valley Colony
Riceville
Sand Coulee
Simms
Stockett
Sun Prairie
Sun River
Tracy
Vaughn
Climate data from the nearest NOAA station, Sun Rvr 4 S, Mt (8.5 mi from Ulm). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.