Hartland Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartland Colony, a community in Hill County, Montana.
Today
70°F
Partly Sunny
Partly sunny, with a high near 70. East northeast wind 6 to 9 mph.
7-day forecast for Hartland Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Partly Sunny | 6 to 9 mph ENE | 0% |
| Tonight | 46°F | Mostly Cloudy | 8 mph E | 0% |
| Sunday | 70°F | Sunny | 7 to 12 mph SE | 0% |
| Sunday Night | 47°F | Mostly Clear | 9 to 14 mph SE | 0% |
| Monday | 74°F | Sunny | 9 to 13 mph SE | 0% |
| Monday Night | 48°F | Mostly Clear | 5 to 14 mph SE | 0% |
| Tuesday | 76°F | Sunny | 6 mph SSW | 0% |
| Tuesday Night | 48°F | Mostly Clear | 5 mph E | 0% |
| Wednesday | 78°F | Sunny | 6 mph SSE | 1% |
| Wednesday Night | 50°F | Mostly Clear | 6 mph SSE | 3% |
| Thursday | 77°F | Sunny | 6 mph SSW | 2% |
| Thursday Night | 50°F | Partly Cloudy | 5 to 10 mph ESE | 10% |
| Friday | 75°F | Mostly Sunny | 10 mph SE | 7% |
| Friday Night | 46°F | Slight Chance Light Rain | 10 mph NNE | 18% |
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.