Zortman, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Zortman, a community in Phillips County, Montana.
Overnight
34°F
Clear
Clear, with a low around 34. North northwest wind around 3 mph.
7-day forecast for Zortman
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 34°F | Clear | 3 mph NNW | 0% |
| Wednesday | 47°F | Sunny | 3 mph W | 0% |
| Wednesday Night | 32°F | Mostly Clear | 1 to 6 mph WSW | 0% |
| Thursday | 52°F | Mostly Sunny | 5 to 8 mph WSW | 0% |
| Thursday Night | 37°F | Partly Cloudy | 7 to 15 mph W | 0% |
| Friday | 50°F | Sunny | 8 to 14 mph WSW | 0% |
| Friday Night | 41°F | Partly Cloudy | 8 to 25 mph WSW | 0% |
| Saturday | 55°F | Sunny | 5 to 23 mph W | 0% |
| Saturday Night | 40°F | Partly Cloudy | 5 to 8 mph SSW | 0% |
| Sunday | 62°F | Partly Sunny | 8 to 13 mph WSW | 1% |
| Sunday Night | 42°F | Partly Cloudy | 12 to 21 mph WNW | 1% |
| Monday | 53°F | Mostly Sunny | 5 to 13 mph W | 1% |
| Monday Night | 39°F | Partly Cloudy | 5 to 9 mph WSW | 0% |
| Tuesday | 56°F | Mostly Sunny | 7 to 10 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Zortman (47.917, -108.509). Updated through the day.
Growing snapshot for Zortman
Last spring frost
May 18
First fall frost
Sep 23
Growing season
126 days
Hardiness zone
4b
More local growing data for Zortman: nearby ZIP 59546 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Zortman, Mt (1.5 mi from Zortman). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.