Pioneer Junction, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pioneer Junction, a community in Lincoln County, Montana.
Today
86°F
Sunny
Sunny, with a high near 86. Northwest wind around 2 mph.
7-day forecast for Pioneer Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 2 mph NW | 0% |
| Tonight | 46°F | Mostly Clear | 2 mph NW | 0% |
| Wednesday | 91°F | Sunny then Patchy Smoke | 2 mph NW | 0% |
| Wednesday Night | 49°F | Patchy Smoke then Mostly Clear | 2 mph WSW | 0% |
| Thursday | 98°F | Sunny | 0 to 3 mph WSW | 0% |
| Thursday Night | 53°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Friday | 98°F | Sunny | 0 to 5 mph W | 0% |
| Friday Night | 53°F | Mostly Clear | 1 to 6 mph SW | 0% |
| Saturday | 94°F | Sunny | 0 to 6 mph WSW | 0% |
| Saturday Night | 51°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Sunday | 92°F | Sunny | 0 to 3 mph W | 0% |
| Sunday Night | 50°F | Mostly Clear | 0 to 3 mph WSW | 0% |
| Monday | 91°F | Sunny | 2 mph NW | 0% |
| Monday Night | 49°F | Mostly Clear | 2 mph W | 1% |
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
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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 Aug 4, 2026.