Ulm, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ulm, a community in Cascade County, Montana.
Today
69°F
Mostly Cloudy
Mostly cloudy, with a high near 69. East northeast wind 2 to 6 mph. Chance of precipitation is 20%.
7-day forecast for Ulm
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Mostly Cloudy | 2 to 6 mph ENE | 18% |
| Tonight | 45°F | Mostly Cloudy | 2 to 7 mph ESE | 7% |
| Sunday | 75°F | Mostly Sunny | 3 mph SSE | 2% |
| Sunday Night | 46°F | Mostly Clear | 6 mph SSE | 0% |
| Monday | 81°F | Sunny | 5 mph SSW | 0% |
| Monday Night | 48°F | Mostly Clear | 6 mph SSW | 0% |
| Tuesday | 81°F | Sunny | 3 mph SW | 0% |
| Tuesday Night | 48°F | Mostly Clear | 6 mph SSW | 0% |
| Wednesday | 82°F | Sunny | 2 to 7 mph SW | 0% |
| Wednesday Night | 49°F | Mostly Clear | 7 mph SSW | 4% |
| Thursday | 82°F | Sunny | 3 to 7 mph SSW | 2% |
| Thursday Night | 49°F | Partly Cloudy | 7 mph SSE | 7% |
| Friday | 79°F | Mostly Sunny | 5 to 9 mph SW | 6% |
| Friday Night | 47°F | Slight Chance Light Rain | 9 mph WNW | 23% |
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
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Big Stone Colony
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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 Sep 19, 2026.