Ulm, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ulm, a community in Cascade County, Montana.
This Afternoon
74°F
Partly Sunny
Partly sunny, with a high near 74. North northeast wind around 10 mph.
7-day forecast for Ulm
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Partly Sunny | 10 mph NNE | 8% |
| Tonight | 51°F | Slight Chance Showers And Thunderstorms then Chance Rain | 2 to 10 mph NNE | 41% |
| Saturday | 66°F | Chance Light Rain | 2 to 8 mph NNE | 30% |
| Saturday Night | 46°F | Mostly Cloudy | 2 to 7 mph SE | 9% |
| Sunday | 75°F | Mostly Sunny | 3 mph S | 2% |
| Sunday Night | 47°F | Mostly Clear | 6 mph SSE | 0% |
| Monday | 81°F | Sunny | 6 mph SSW | 0% |
| Monday Night | 49°F | Mostly Clear | 6 mph SSW | 0% |
| Tuesday | 79°F | Sunny | 5 mph SW | 0% |
| Tuesday Night | 49°F | Mostly Clear | 2 to 6 mph SSE | 1% |
| Wednesday | 80°F | Sunny | 3 to 8 mph SW | 0% |
| Wednesday Night | 49°F | Mostly Clear | 3 to 7 mph SSW | 3% |
| Thursday | 81°F | Sunny | 2 to 6 mph SSW | 2% |
| Thursday Night | 50°F | Partly Cloudy | 8 mph SSE | 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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Monarch
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Sun Prairie
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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 Sep 19, 2026.