Hysham, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hysham, a town in Treasure County, Montana.
Today
77°F
Sunny
Sunny, with a high near 77. West northwest wind 1 to 7 mph.
7-day forecast for Hysham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 1 to 7 mph WNW | 0% |
| Tonight | 51°F | Partly Cloudy | 0 to 6 mph E | 1% |
| Wednesday | 87°F | Sunny | 0 to 3 mph SW | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Thursday | 94°F | Sunny | 0 to 6 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Friday | 99°F | Sunny | 0 to 5 mph W | 0% |
| Friday Night | 63°F | Partly Cloudy | 2 to 7 mph NE | 0% |
| Saturday | 96°F | Sunny | 3 to 9 mph NW | 0% |
| Saturday Night | 64°F | Partly Cloudy | 2 to 7 mph ENE | 1% |
| Sunday | 95°F | Mostly Sunny | 3 to 9 mph NNE | 0% |
| Sunday Night | 64°F | Partly Cloudy | 5 to 8 mph NE | 10% |
| Monday | 92°F | Mostly Sunny | 5 to 9 mph NE | 5% |
| Monday Night | 64°F | Partly Cloudy then Slight Chance Rain Showers | 9 mph ENE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Hysham (46.291, -107.230). Updated through the day.
Growing snapshot for Hysham
Last spring frost
May 10
First fall frost
Sep 29
Growing season
141 days
Hardiness zone
4b
More local growing data for Hysham: nearby ZIP 59038 weather · frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Hysham, Mt (4.8 mi from Hysham). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.