Flat Willow Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flat Willow Colony, a community in Musselshell County, Montana.
Today
74°F
Sunny
Sunny, with a high near 74. Northwest wind 3 to 7 mph.
7-day forecast for Flat Willow Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Sunny | 3 to 7 mph NW | 0% |
| Tonight | 50°F | Partly Cloudy | 3 to 7 mph SE | 2% |
| Wednesday | 85°F | Sunny | 6 to 9 mph W | 0% |
| Wednesday Night | 54°F | Mostly Clear | 3 to 10 mph NW | 0% |
| Thursday | 91°F | Sunny | 6 to 12 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 3 to 13 mph NNW | 0% |
| Friday | 95°F | Sunny | 5 to 9 mph SW | 0% |
| Friday Night | 61°F | Mostly Clear | 6 to 13 mph N | 0% |
| Saturday | 92°F | Sunny | 10 to 15 mph NW | 0% |
| Saturday Night | 60°F | Mostly Clear | 3 to 13 mph NNE | 2% |
| Sunday | 89°F | Mostly Sunny | 6 to 14 mph N | 1% |
| Sunday Night | 60°F | Partly Cloudy | 7 to 13 mph NNE | 5% |
| Monday | 86°F | Sunny | 9 to 13 mph NNE | 5% |
| Monday Night | 59°F | Partly Cloudy then Slight Chance Rain Showers | 7 to 13 mph NE | 16% |
Forecast source: National Weather Service (api.weather.gov) for Flat Willow Colony (46.725, -108.488). Updated through the day.
Growing snapshot for Flat Willow Colony
Last spring frost
May 20
First fall frost
Sep 21
Growing season
124 days
Hardiness zone
4b
More local growing data for Flat Willow Colony: nearby ZIP 59072 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Roundup, Mt (6.2 mi from Flat Willow Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.