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Hartland Colony, MT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Hartland Colony, a community in Hill County, Montana.

This Afternoon
70°F
Partly Sunny
Partly sunny, with a high near 70. East wind around 8 mph.

7-day forecast for Hartland Colony

WhenTempForecastWindPrecip
This Afternoon 70°F Partly Sunny 8 mph E 0%
Tonight 46°F Mostly Cloudy 7 mph E 2%
Sunday 70°F Sunny 6 to 12 mph SE 1%
Sunday Night 47°F Partly Cloudy 9 to 13 mph SE 0%
Monday 74°F Mostly Sunny 9 to 13 mph SE 0%
Monday Night 49°F Mostly Clear 7 to 15 mph SE 0%
Tuesday 77°F Sunny 6 mph SSE 0%
Tuesday Night 50°F Partly Cloudy 5 mph SE 0%
Wednesday 78°F Mostly Sunny 6 mph S 0%
Wednesday Night 50°F Partly Cloudy 5 mph SSW 6%
Thursday 76°F Mostly Sunny 6 mph W 3%
Thursday Night 50°F Partly Cloudy 5 to 10 mph ENE 11%
Friday 74°F Mostly Sunny 8 to 12 mph ESE 6%
Friday Night 47°F Slight Chance Light Rain 12 mph E 17%

Forecast source: National Weather Service (api.weather.gov) for Hartland Colony (48.952, -109.448). Updated through the day.

Growing snapshot for Hartland Colony

Last spring frost
May 15
First fall frost
Sep 23
Growing season
129 days
Hardiness zone
3b

More local growing data for Hartland Colony: nearby ZIP 59501 weather · frost dates · planting calendar · Montana frost dates

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Climate data from the nearest NOAA station, Havre City Co Ap, Mt (10.2 mi from Hartland Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.