Pioneer Junction, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pioneer Junction, a community in Lincoln County, Montana.
Tonight
27°F
Mostly Cloudy
Mostly cloudy, with a low around 27. Wind around 0 mph.
7-day forecast for Pioneer Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 27°F | Mostly Cloudy | 0 mph | 0% |
| Wednesday | 51°F | Mostly Sunny | 0 mph | 0% |
| Wednesday Night | 27°F | Partly Cloudy then Slight Chance Light Snow | 0 mph | 18% |
| Thursday | 46°F | Slight Chance Light Snow then Chance Rain And Snow | 2 mph SSW | 28% |
| Thursday Night | 30°F | Mostly Cloudy | 1 mph SSW | 9% |
| Friday | 50°F | Mostly Cloudy then Chance Light Rain | 3 mph SSW | 27% |
| Friday Night | 32°F | Chance Light Rain | 0 to 3 mph SSW | 27% |
| Saturday | 55°F | Partly Sunny | 1 mph SSE | 11% |
| Saturday Night | 33°F | Mostly Cloudy then Light Rain Likely | 1 mph SSE | 61% |
| Sunday | 55°F | Light Rain Likely | 1 to 5 mph SSW | 61% |
| Sunday Night | 33°F | Chance Light Rain | 2 mph SSW | 28% |
| Monday | 52°F | Partly Sunny then Chance Light Rain | 1 mph NE | 29% |
| Monday Night | 33°F | Chance Light Rain | 0 mph | 29% |
| Tuesday | 54°F | Chance Light Rain | 1 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov) for Pioneer Junction (48.316, -115.518). Updated through the day.
Growing snapshot for Pioneer Junction
Last spring frost
May 11
First fall frost
Oct 1
Growing season
142 days
Hardiness zone
6a
More local growing data for Pioneer Junction: nearby ZIP 59923 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Eureka
Fortine
Happys Inn
Indian Springs
Libby
Rexford
Stryker
Sylvanite
Trego
Troy
West Kootenai
White Haven
Yaak
Climate data from the nearest NOAA station, Libby Dam (Base), Mt (9.6 mi from Pioneer Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.