Harman US

Alder, MT Weather & Growing Conditions

This Afternoon
54°F
Showers And Thunderstorms
Showers and thunderstorms before 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 54. North wind 2 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 54°F Showers And Thunderstorms 2 to 6 mph N 77%
Tonight 41°F Chance Showers And Thunderstorms then Patchy Fog 1 to 7 mph S 35%
Sunday 61°F Patchy Fog then Mostly Sunny 0 to 5 mph WNW 2%
Sunday Night 40°F Mostly Clear 5 mph ESE 1%
Monday 68°F Sunny 1 to 5 mph SW 1%
Monday Night 43°F Mostly Clear 5 to 8 mph SSW 0%
Tuesday 71°F Mostly Sunny 2 to 6 mph S 2%
Tuesday Night 46°F Mostly Cloudy 5 to 9 mph S 12%
Wednesday 71°F Mostly Sunny 6 to 10 mph SSW 5%
Wednesday Night 46°F Partly Cloudy 10 to 15 mph S 6%
Thursday 73°F Sunny 10 to 17 mph S 2%
Thursday Night 48°F Partly Cloudy 15 to 18 mph S 1%
Friday 73°F Mostly Sunny 12 to 20 mph S 3%
Friday Night 46°F Mostly Cloudy 13 to 17 mph S 6%

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.