Harman US

Alder, MT Weather & Growing Conditions

Today
56°F
Areas Of Fog then Showers And Thunderstorms
Areas of fog and a chance of rain before 11am, then rain likely and areas of fog between 11am and noon, then showers and thunderstorms between noon and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 56. North northwest wind 0 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 56°F Areas Of Fog then Showers And Thunderstorms 0 to 6 mph NNW 80%
Tonight 41°F Chance Light Rain 1 to 6 mph SSE 45%
Sunday 62°F Areas Of Fog then Partly Sunny 1 to 5 mph W 1%
Sunday Night 40°F Partly Cloudy 5 mph SSE 1%
Monday 69°F Sunny 1 to 6 mph SW 1%
Monday Night 43°F Mostly Clear 5 to 8 mph SSW 0%
Tuesday 71°F Mostly Sunny 2 to 6 mph SSW 1%
Tuesday Night 44°F Partly Cloudy 7 mph S 2%
Wednesday 72°F Sunny 5 to 8 mph S 5%
Wednesday Night 45°F Mostly Clear 8 to 14 mph S 2%
Thursday 73°F Sunny 8 to 12 mph S 3%
Thursday Night 46°F Mostly Clear 12 to 15 mph S 2%
Friday 73°F Mostly Sunny 9 to 17 mph S 3%
Friday Night 45°F Mostly Cloudy 12 to 15 mph S 12%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Alder, MT

Last spring frost
Jun 6
First fall frost
Sep 14
Growing season
98 days
Hardiness zone
5a

Explore more for Alder, MT: full frost dates · planting calendar · Montana frost dates

Climate data from the nearest NOAA station, Alder 17 S, Mt (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.