Zortman, MT Weather & Growing Conditions
This Afternoon
49°F
Sunny
Sunny. High near 49, with temperatures falling to around 42 in the afternoon. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Sunny | 3 mph S | 0% |
| Tonight | 34°F | Mostly Clear | 3 mph W | 0% |
| Wednesday | 48°F | Sunny | 3 mph WSW | 0% |
| Wednesday Night | 33°F | Partly Cloudy | 1 to 6 mph SSW | 0% |
| Thursday | 52°F | Mostly Sunny | 5 to 9 mph WSW | 0% |
| Thursday Night | 35°F | Partly Cloudy | 7 to 16 mph W | 1% |
| Friday | 50°F | Sunny | 9 to 16 mph WSW | 7% |
| Friday Night | 40°F | Partly Cloudy | 9 to 25 mph W | 8% |
| Saturday | 54°F | Sunny | 6 to 23 mph WSW | 1% |
| Saturday Night | 40°F | Partly Cloudy | 6 to 9 mph SW | 0% |
| Sunday | 61°F | Partly Sunny | 9 to 14 mph WSW | 1% |
| Sunday Night | 41°F | Partly Cloudy | 14 to 23 mph W | 0% |
| Monday | 51°F | Mostly Sunny | 5 to 15 mph W | 0% |
| Monday Night | 39°F | Mostly Cloudy | 5 to 10 mph WSW | 1% |
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 Nov 4, 2026.