Ulm, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ulm, a community in Cascade County, Montana.
Today
57°F
Sunny
Sunny. High near 57, with temperatures falling to around 50 in the afternoon. South southwest wind 3 to 12 mph, with gusts as high as 20 mph.
7-day forecast for Ulm
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Sunny | 3 to 12 mph SSW | 0% |
| Tonight | 28°F | Mostly Cloudy | 3 mph SSW | 0% |
| Wednesday | 50°F | Mostly Sunny | 2 mph WSW | 0% |
| Wednesday Night | 29°F | Mostly Clear | 1 to 7 mph S | 0% |
| Thursday | 56°F | Mostly Sunny | 7 to 18 mph SW | 0% |
| Thursday Night | 33°F | Mostly Clear | 14 mph SW | 0% |
| Friday | 55°F | Mostly Sunny | 13 to 26 mph SW | 1% |
| Friday Night | 37°F | Partly Cloudy | 16 to 24 mph SW | 3% |
| Saturday | 56°F | Mostly Sunny | 8 to 17 mph SW | 0% |
| Saturday Night | 37°F | Partly Cloudy | 8 to 14 mph SSW | 0% |
| Sunday | 62°F | Mostly Sunny | 12 to 18 mph SSW | 0% |
| Sunday Night | 37°F | Mostly Cloudy | 6 to 12 mph SW | 1% |
| Monday | 57°F | Partly Sunny | 6 mph SW | 2% |
| Monday Night | 37°F | Mostly Cloudy | 6 to 10 mph SSW | 2% |
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
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Great Falls
Hardy
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Monarch
Neihart
Pleasant Valley Colony
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Sand Coulee
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Sun Prairie
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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 Nov 3, 2026.