Harman US

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

WhenTempForecastWindPrecip
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.