Harman US

Lonepine, MT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Lonepine, a community in Sanders County, Montana.

Tonight
20°F
Mostly Cloudy
Mostly cloudy, with a low around 20. Wind around 0 mph.

7-day forecast for Lonepine

WhenTempForecastWindPrecip
Tonight 20°F Mostly Cloudy 0 mph 0%
Wednesday 48°F Mostly Sunny 2 mph SE 0%
Wednesday Night 20°F Mostly Clear 1 mph WSW 2%
Thursday 46°F Partly Sunny 1 to 6 mph SW 9%
Thursday Night 22°F Mostly Cloudy 5 mph SW 2%
Friday 51°F Partly Sunny 2 to 7 mph SSW 13%
Friday Night 27°F Mostly Cloudy 1 to 8 mph SW 13%
Saturday 56°F Partly Sunny 0 to 3 mph SSW 3%
Saturday Night 29°F Mostly Cloudy then Chance Light Rain 2 mph WSW 28%
Sunday 58°F Chance Light Rain 2 to 15 mph SW 28%
Sunday Night 28°F Mostly Cloudy 0 to 8 mph SW 11%
Monday 53°F Partly Sunny then Slight Chance Light Rain 2 mph SSE 16%
Monday Night 28°F Slight Chance Light Rain 1 mph WSW 16%
Tuesday 56°F Partly Sunny then Slight Chance Light Rain 3 mph SSW 16%

Forecast source: National Weather Service (api.weather.gov) for Lonepine (47.692, -114.640). Updated through the day.

Growing snapshot for Lonepine

Last spring frost
May 15
First fall frost
Sep 28
Growing season
134 days
Hardiness zone
6a

More local growing data for Lonepine: nearby ZIP 59848 weather · frost dates · planting calendar · Montana frost dates

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Climate data from the nearest NOAA station, Skq Dam, Mt (21 mi from Lonepine). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.