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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.