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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

WhenTempForecastWindPrecip
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

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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 Sep 19, 2026.