Fair Haven Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fair Haven Colony, a community in Cascade County, Montana.
Overnight
28°F
Mostly Cloudy
Mostly cloudy, with a low around 28. Southwest wind around 2 mph.
7-day forecast for Fair Haven Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 28°F | Mostly Cloudy | 2 mph SW | 0% |
| Wednesday | 50°F | Mostly Sunny | 2 mph SW | 0% |
| Wednesday Night | 30°F | Mostly Clear | 1 to 10 mph S | 0% |
| Thursday | 55°F | Mostly Sunny | 10 to 21 mph SSW | 0% |
| Thursday Night | 34°F | Partly Cloudy | 14 mph SW | 0% |
| Friday | 55°F | Sunny | 12 to 28 mph SW | 0% |
| Friday Night | 40°F | Mostly Cloudy | 15 to 24 mph SW | 1% |
| Saturday | 61°F | Mostly Sunny | 7 to 15 mph SSW | 1% |
| Saturday Night | 39°F | Partly Cloudy | 7 to 13 mph SSW | 0% |
| Sunday | 63°F | Mostly Sunny | 12 to 23 mph SW | 0% |
| Sunday Night | 37°F | Partly Cloudy | 6 to 12 mph SW | 0% |
| Monday | 57°F | Mostly Sunny | 6 mph SW | 0% |
| Monday Night | 37°F | Mostly Cloudy | 5 to 10 mph SSW | 0% |
| Tuesday | 59°F | Mostly Sunny | 10 to 20 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Fair Haven Colony (47.404, -111.629). Updated through the day.
Growing snapshot for Fair Haven Colony
Last spring frost
Jun 2
First fall frost
Sep 10
Growing season
96 days
Hardiness zone
4a
More local growing data for Fair Haven Colony: nearby ZIP 59485 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Sun Rvr 4 S, Mt (8.5 mi from Fair Haven Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.