Zortman, MT Weather & Growing Conditions
Overnight
52°F
Mostly Cloudy
Mostly cloudy, with a low around 52. Northeast wind around 13 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 13 mph NE | 2% |
| Saturday | 63°F | Cloudy | 12 mph NE | 8% |
| Saturday Night | 49°F | Chance Rain Showers | 6 to 9 mph ENE | 37% |
| Sunday | 60°F | Chance Rain Showers then Mostly Cloudy | 6 to 9 mph E | 35% |
| Sunday Night | 48°F | Mostly Cloudy | 10 mph SE | 6% |
| Monday | 67°F | Partly Sunny | 12 mph SSE | 1% |
| Monday Night | 50°F | Mostly Clear | 8 to 13 mph SSE | 0% |
| Tuesday | 74°F | Sunny | 6 mph SW | 0% |
| Tuesday Night | 53°F | Mostly Clear | 6 mph SSE | 2% |
| Wednesday | 75°F | Sunny | 3 to 7 mph SSE | 1% |
| Wednesday Night | 55°F | Mostly Clear | 7 mph SSE | 1% |
| Thursday | 75°F | Sunny | 5 to 8 mph S | 2% |
| Thursday Night | 54°F | Mostly Clear | 10 mph SE | 5% |
| Friday | 74°F | Mostly Sunny | 8 to 13 mph S | 2% |
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 Sep 19, 2026.