Alder, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alder, a community in Madison County, Montana.
This Afternoon
47°F
Sunny
Sunny. High near 47, with temperatures falling to around 42 in the afternoon. North northwest wind around 2 mph.
7-day forecast for Alder
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Sunny | 2 mph NNW | 0% |
| Tonight | 27°F | Mostly Clear | 1 to 7 mph S | 0% |
| Thursday | 45°F | Partly Sunny | 5 to 8 mph SW | 1% |
| Thursday Night | 25°F | Partly Cloudy | 5 mph SSW | 11% |
| Friday | 46°F | Sunny | 7 mph SSW | 0% |
| Friday Night | 28°F | Partly Cloudy | 6 to 12 mph S | 0% |
| Saturday | 52°F | Sunny | 6 mph SSW | 0% |
| Saturday Night | 31°F | Mostly Clear | 5 to 16 mph S | 0% |
| Sunday | 56°F | Mostly Sunny | 13 mph S | 1% |
| Sunday Night | 32°F | Mostly Cloudy | 6 to 15 mph S | 1% |
| Monday | 53°F | Partly Sunny | 6 mph SSW | 1% |
| Monday Night | 32°F | Mostly Cloudy | 5 to 10 mph S | 1% |
| Tuesday | 54°F | Mostly Sunny | 7 mph SSW | 2% |
| Tuesday Night | 33°F | Partly Cloudy | 6 to 15 mph SSW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Alder (45.322, -112.109). Updated through the day.
Growing snapshot for Alder
Last spring frost
May 24
First fall frost
Sep 22
Growing season
117 days
Hardiness zone
5a
More local growing data for Alder: nearby ZIP 59749 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Laurin 2Ne, Mt (6.1 mi from Alder). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.