Sedan, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sedan, a community in Park County, Montana.
Overnight
41°F
Mostly Clear
Mostly clear, with a low around 41. South southwest wind around 6 mph.
7-day forecast for Sedan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Mostly Clear | 6 mph SSW | 0% |
| Tuesday | 71°F | Patchy Smoke | 2 to 6 mph E | 0% |
| Tuesday Night | 46°F | Patchy Smoke | 0 to 6 mph WNW | 1% |
| Wednesday | 77°F | Patchy Smoke | 0 to 7 mph WSW | 0% |
| Wednesday Night | 51°F | Mostly Clear | 0 to 6 mph SW | 0% |
| Thursday | 85°F | Sunny | 0 to 9 mph WSW | 0% |
| Thursday Night | 55°F | Mostly Clear | 0 to 8 mph SSE | 0% |
| Friday | 88°F | Sunny | 0 to 14 mph WSW | 0% |
| Friday Night | 57°F | Mostly Clear | 1 to 17 mph WNW | 0% |
| Saturday | 87°F | Sunny | 1 to 12 mph W | 0% |
| Saturday Night | 56°F | Partly Cloudy | 2 to 12 mph NNW | 1% |
| Sunday | 86°F | Sunny | 0 to 7 mph WNW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 3 to 8 mph ENE | 4% |
| Monday | 84°F | Sunny | 0 to 6 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Sedan (45.963, -110.879). Updated through the day.
Growing snapshot for Sedan
Last spring frost
Jun 4
First fall frost
Sep 6
Growing season
92 days
Hardiness zone
4b
More local growing data for Sedan: nearby ZIP 59086 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Clyde Park
Cooke City
Corwin Springs
Emigrant
Gardiner
Jardine
Livingston
Pine Creek
Pray
Silver Gate
South Glastonbury
Springdale
Wilsall
Wineglass
Climate data from the nearest NOAA station, Wilsall 1S, Mt (5.1 mi from Sedan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.