Harman US

White Haven, MT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for White Haven, 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 White Haven

WhenTempForecastWindPrecip
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 16%
Thursday 46°F Slight Chance Light Snow then Chance Rain And Snow 1 mph SSW 25%
Thursday Night 31°F Mostly Cloudy 1 mph SSW 8%
Friday 51°F Mostly Cloudy then Chance Light Rain 2 mph SSW 27%
Friday Night 33°F Chance Light Rain 2 mph SSW 27%
Saturday 55°F Partly Sunny 1 mph ESE 11%
Saturday Night 34°F Mostly Cloudy then Light Rain Likely 0 mph 61%
Sunday 55°F Light Rain Likely 0 to 5 mph SSW 61%
Sunday Night 33°F Chance Light Rain 2 mph SW 26%
Monday 52°F Partly Sunny then Chance Light Rain 1 mph NNE 28%
Monday Night 33°F Chance Light Rain 0 mph 28%
Tuesday 54°F Chance Light Rain 1 mph SW 33%

Forecast source: National Weather Service (api.weather.gov) for White Haven (48.348, -115.516). Updated through the day.

Growing snapshot for White Haven

Last spring frost
May 11
First fall frost
Oct 1
Growing season
142 days
Hardiness zone
6a

More local growing data for White Haven: nearby ZIP 59923 weather · frost dates · planting calendar · Montana frost dates

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Climate data from the nearest NOAA station, Libby Dam (Base), Mt (9.6 mi from White Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.