Sedan, MT Weather & Growing Conditions
This Afternoon
48°F
Sunny
Sunny. High near 48, with temperatures falling to around 41 in the afternoon. North wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Sunny | 1 mph N | 0% |
| Tonight | 26°F | Mostly Clear | 2 mph SE | 0% |
| Thursday | 45°F | Mostly Sunny | 2 to 7 mph SW | 12% |
| Thursday Night | 26°F | Partly Cloudy | 6 mph WSW | 12% |
| Friday | 44°F | Sunny | 6 to 13 mph SW | 0% |
| Friday Night | 29°F | Partly Cloudy | 6 to 10 mph SW | 0% |
| Saturday | 51°F | Sunny | 2 to 6 mph SW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 2 to 7 mph S | 0% |
| Sunday | 56°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Sunday Night | 31°F | Partly Cloudy | 1 to 6 mph SW | 3% |
| Monday | 51°F | Mostly Sunny | 3 mph SW | 2% |
| Monday Night | 31°F | Mostly Cloudy | 3 mph S | 2% |
| Tuesday | 53°F | Mostly Sunny | 2 to 7 mph SW | 2% |
| Tuesday Night | 32°F | Partly Cloudy | 2 to 6 mph SW | 4% |
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 Nov 4, 2026.