Luther, MT Weather & Growing Conditions
Tonight
29°F
Patchy Fog
Patchy fog and rain and snow showers before 9pm, then patchy fog and rain and snow showers. Cloudy. Low around 29, with temperatures rising to around 31 overnight. North northwest wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of less than half an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Patchy Fog | 8 mph NNW | 84% |
| Sunday | 40°F | Snow Showers Likely then Patchy Fog | 8 mph NNW | 67% |
| Sunday Night | 29°F | Patchy Fog | 7 mph WNW | 17% |
| Monday | 48°F | Sunny | 6 to 10 mph WSW | 10% |
| Monday Night | 32°F | Mostly Clear | 7 to 10 mph SW | 1% |
| Tuesday | 52°F | Sunny | 8 to 12 mph WSW | 2% |
| Tuesday Night | 36°F | Mostly Cloudy then Chance Rain And Snow Showers | 9 to 16 mph SW | 27% |
| Wednesday | 52°F | Partly Sunny then Chance Showers And Thunderstorms | 12 to 20 mph WSW | 29% |
| Wednesday Night | 35°F | Partly Cloudy | 12 to 23 mph WSW | 7% |
| Thursday | 55°F | Sunny | 12 to 24 mph SW | 2% |
| Thursday Night | 37°F | Partly Cloudy | 13 to 22 mph SW | 2% |
| Friday | 56°F | Mostly Sunny | 15 to 23 mph WSW | 5% |
| Friday Night | 36°F | Partly Cloudy | 14 to 22 mph WSW | 10% |
| Saturday | 51°F | Partly Sunny then Chance Rain And Snow Showers | 16 to 21 mph WSW | 29% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Luther, MT
Last spring frost
Jun 5
First fall frost
Sep 14
Growing season
99 days
Hardiness zone
5a
Explore more for Luther, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Mystic Lake, Mt (13.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.