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
46°F
Partly Cloudy
Partly cloudy, with a low around 46. North wind around 1 mph.
7-day forecast for Pioneer Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 81°F | Sunny | 0 mph | 3% |
| Saturday Night | 46°F | Partly Cloudy | 0 mph | 1% |
| Sunday | 81°F | Sunny | 0 mph | 0% |
| Sunday Night | 47°F | Clear | 0 mph | 0% |
| Monday | 82°F | Sunny | 1 mph NW | 0% |
| Monday Night | 47°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 80°F | Sunny | 0 mph | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 0 mph | 1% |
| Wednesday | 76°F | Sunny | 2 mph WSW | 1% |
| Wednesday Night | 46°F | Partly Cloudy | 0 mph | 0% |
| Thursday | 79°F | Mostly Sunny | 0 mph | 1% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 4% |
| Friday | 76°F | Mostly Sunny | 2 mph WNW | 7% |
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
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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 Sep 19, 2026.