Hysham, MT Weather & Growing Conditions
Overnight
45°F
Mostly Clear
Mostly clear. Low around 45, with temperatures rising to around 47 overnight. West southwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Mostly Clear | 3 mph WSW | 0% |
| Tuesday | 75°F | Sunny | 3 to 9 mph WNW | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 2 to 7 mph ESE | 1% |
| Wednesday | 85°F | Mostly Sunny | 2 to 7 mph WSW | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 7 mph N | 0% |
| Thursday | 93°F | Sunny | 1 to 9 mph W | 0% |
| Thursday Night | 60°F | Mostly Clear | 3 to 10 mph NNE | 0% |
| Friday | 96°F | Sunny | 3 to 9 mph ESE | 0% |
| Friday Night | 62°F | Mostly Clear | 7 to 12 mph NE | 0% |
| Saturday | 93°F | Sunny | 6 to 15 mph NNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 7 to 12 mph NE | 2% |
| Sunday | 92°F | Mostly Sunny | 7 to 15 mph NNE | 0% |
| Sunday Night | 63°F | Partly Cloudy | 13 mph NE | 8% |
| Monday | 89°F | Mostly Sunny | 9 to 13 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hysham, MT
Last spring frost
May 21
First fall frost
Sep 19
Growing season
120 days
Hardiness zone
4b
Explore more for Hysham, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Ingomar 9 E, Mt (9.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.