Alder, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alder, a community in Madison County, Montana.
Overnight
41°F
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 41. East wind around 2 mph.
7-day forecast for Alder
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Areas Of Smoke | 2 mph E | 0% |
| Tuesday | 75°F | Areas Of Smoke | 2 to 7 mph NNE | 0% |
| Tuesday Night | 45°F | Areas Of Smoke | 1 to 6 mph ESE | 0% |
| Wednesday | 82°F | Patchy Smoke | 2 to 8 mph WSW | 0% |
| Wednesday Night | 49°F | Patchy Smoke then Mostly Clear | 2 to 8 mph WNW | 0% |
| Thursday | 90°F | Sunny | 2 to 10 mph SW | 0% |
| Thursday Night | 54°F | Mostly Clear | 1 to 12 mph SW | 0% |
| Friday | 92°F | Sunny | 3 to 16 mph SW | 0% |
| Friday Night | 55°F | Mostly Clear | 2 to 18 mph WSW | 0% |
| Saturday | 91°F | Sunny | 3 to 15 mph SW | 1% |
| Saturday Night | 55°F | Partly Cloudy | 1 to 15 mph NW | 2% |
| Sunday | 89°F | Sunny | 2 to 12 mph SW | 1% |
| Sunday Night | 53°F | Mostly Clear | 2 to 13 mph NE | 5% |
| Monday | 88°F | Sunny | 2 to 9 mph SSW | 2% |
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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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 Aug 4, 2026.