Alder, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alder, a community in Madison County, Montana.
Overnight
26°F
Mostly Cloudy
Mostly cloudy, with a low around 26. Southeast wind around 1 mph.
7-day forecast for Alder
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 26°F | Mostly Cloudy | 1 mph SE | 0% |
| Wednesday | 47°F | Partly Sunny | 2 mph NNW | 0% |
| Wednesday Night | 27°F | Mostly Clear | 1 to 7 mph SSE | 0% |
| Thursday | 44°F | Partly Sunny then Slight Chance Light Rain | 7 mph S | 18% |
| Thursday Night | 26°F | Slight Chance Light Rain then Partly Cloudy | 6 mph SSW | 18% |
| Friday | 46°F | Sunny | 5 to 8 mph SSW | 0% |
| Friday Night | 28°F | Partly Cloudy | 6 to 13 mph S | 0% |
| Saturday | 52°F | Sunny | 6 mph SSW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 5 to 16 mph S | 0% |
| Sunday | 56°F | Mostly Sunny | 13 mph S | 1% |
| Sunday Night | 31°F | Partly Cloudy | 6 to 15 mph S | 1% |
| Monday | 53°F | Mostly Sunny | 6 mph SSW | 1% |
| Monday Night | 32°F | Mostly Cloudy | 6 to 12 mph S | 1% |
| Tuesday | 54°F | Mostly Sunny | 7 mph SW | 3% |
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
Nearby towns & communities
Big Sky
Brandon
Ennis
Harrison
Jeffers
Mammoth
McAllister
Norris
Pony
Sheridan
Silver Star
Twin Bridges
Virginia City
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.