Arlee, MT Weather & Growing Conditions
Tonight
26°F
Mostly Cloudy
Mostly cloudy, with a low around 26. North northwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 26°F | Mostly Cloudy | 1 mph NNW | 0% |
| Wednesday | 41°F | Mostly Sunny | 3 mph WNW | 0% |
| Wednesday Night | 27°F | Mostly Clear | 1 to 6 mph SE | 0% |
| Thursday | 38°F | Partly Sunny | 2 to 6 mph SSW | 12% |
| Thursday Night | 28°F | Mostly Cloudy | 2 to 6 mph S | 6% |
| Friday | 42°F | Partly Sunny | 3 to 7 mph S | 7% |
| Friday Night | 34°F | Mostly Cloudy | 3 to 9 mph S | 7% |
| Saturday | 49°F | Partly Sunny | 2 to 8 mph SSE | 3% |
| Saturday Night | 38°F | Partly Cloudy then Slight Chance Light Rain | 2 to 13 mph SE | 22% |
| Sunday | 50°F | Slight Chance Light Rain | 5 to 13 mph SSW | 22% |
| Sunday Night | 34°F | Slight Chance Rain And Snow | 6 mph S | 15% |
| Monday | 46°F | Partly Sunny then Slight Chance Light Rain | 1 to 5 mph S | 17% |
| Monday Night | 37°F | Slight Chance Light Rain then Slight Chance Rain And Snow | 1 to 6 mph SE | 17% |
| Tuesday | 48°F | Slight Chance Rain And Snow | 2 to 6 mph SSW | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Arlee, MT
Last spring frost
May 12
First fall frost
Oct 2
Growing season
142 days
Hardiness zone
5b
Explore more for Arlee, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Saint Ignatius, Mt (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.