Sedan, MT Weather & Growing Conditions
Today
72°F
Patchy Smoke then Sunny
Patchy smoke before 8am. Sunny, with a high near 72. Northeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Patchy Smoke then Sunny | 0 to 5 mph NE | 0% |
| Tonight | 43°F | Mostly Clear | 1 to 6 mph ENE | 1% |
| Wednesday | 78°F | Sunny | 1 to 8 mph WSW | 0% |
| Wednesday Night | 47°F | Mostly Clear | 1 to 6 mph ENE | 0% |
| Thursday | 86°F | Sunny | 2 to 12 mph WSW | 0% |
| Thursday Night | 52°F | Mostly Clear | 1 to 12 mph NNE | 0% |
| Friday | 89°F | Sunny | 2 to 15 mph SW | 0% |
| Friday Night | 53°F | Partly Cloudy | 2 to 17 mph WNW | 0% |
| Saturday | 87°F | Sunny | 1 to 13 mph WSW | 0% |
| Saturday Night | 53°F | Partly Cloudy | 2 to 10 mph N | 1% |
| Sunday | 87°F | Sunny | 0 to 8 mph NW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 3 to 9 mph NNE | 2% |
| Monday | 84°F | Sunny | 1 to 7 mph NW | 3% |
| Monday Night | 51°F | Partly Cloudy | 3 to 8 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sedan, MT
Growing season
65 days
Hardiness zone
4b
Explore more for Sedan, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Lennep 5 Sw, Mt (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.