Zortman, MT Weather & Growing Conditions
Overnight
46°F
Mostly Clear
Mostly clear, with a low around 46. West northwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Mostly Clear | 8 mph WNW | 0% |
| Tuesday | 71°F | Sunny | 10 mph WNW | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 3 to 9 mph WNW | 2% |
| Wednesday | 80°F | Partly Sunny | 7 to 13 mph W | 0% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 12 mph W | 0% |
| Thursday | 86°F | Sunny | 5 to 12 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 6 to 13 mph NNE | 0% |
| Friday | 88°F | Sunny | 6 to 9 mph ESE | 0% |
| Friday Night | 62°F | Mostly Clear | 12 mph N | 0% |
| Saturday | 86°F | Sunny | 13 mph WNW | 0% |
| Saturday Night | 61°F | Partly Cloudy | 10 mph NNE | 1% |
| Sunday | 84°F | Mostly Sunny | 9 to 13 mph NNE | 2% |
| Sunday Night | 60°F | Partly Cloudy | 13 mph NNE | 13% |
| Monday | 81°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 8 to 12 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Zortman, MT
Last spring frost
May 18
First fall frost
Sep 23
Growing season
126 days
Hardiness zone
4b
Explore more for Zortman, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Zortman, Mt (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.