Alder, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alder, a community in Madison County, Montana.
Overnight
47°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a low around 47. North northeast wind around 3 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Alder
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Showers And Thunderstorms | 3 mph NNE | 83% |
| Saturday | 57°F | Showers And Thunderstorms Likely | 1 to 6 mph N | 74% |
| Saturday Night | 45°F | Chance Light Rain | 0 to 6 mph ENE | 47% |
| Sunday | 66°F | Patchy Fog then Mostly Sunny | 0 to 5 mph W | 5% |
| Sunday Night | 43°F | Mostly Clear | 5 mph SE | 0% |
| Monday | 72°F | Sunny | 5 mph SW | 0% |
| Monday Night | 46°F | Mostly Clear | 5 mph SSE | 1% |
| Tuesday | 74°F | Mostly Sunny | 5 mph SW | 1% |
| Tuesday Night | 46°F | Partly Cloudy | 6 mph S | 5% |
| Wednesday | 75°F | Sunny | 7 mph SSW | 3% |
| Wednesday Night | 46°F | Mostly Clear | 6 to 10 mph S | 2% |
| Thursday | 77°F | Sunny | 7 mph S | 2% |
| Thursday Night | 48°F | Mostly Clear | 7 to 13 mph SSE | 1% |
| Friday | 77°F | Mostly Sunny | 7 to 10 mph S | 1% |
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 Sep 19, 2026.