Hysham, MT Weather & Growing Conditions
Today
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 76 in the afternoon. West northwest wind 1 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Sunny | 1 to 8 mph WNW | 0% |
| Tonight | 51°F | Partly Cloudy | 1 to 7 mph ESE | 1% |
| Wednesday | 88°F | Sunny | 0 to 3 mph WSW | 0% |
| Wednesday Night | 56°F | Mostly Clear | 3 mph NNW | 0% |
| Thursday | 94°F | Sunny | 0 to 5 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 1 to 5 mph NE | 0% |
| Friday | 99°F | Sunny | 1 to 5 mph SSW | 0% |
| Friday Night | 63°F | Mostly Clear | 3 to 8 mph NE | 0% |
| Saturday | 96°F | Sunny | 3 to 9 mph NW | 0% |
| Saturday Night | 64°F | Partly Cloudy | 7 mph ENE | 1% |
| Sunday | 95°F | Mostly Sunny | 3 to 9 mph NNE | 0% |
| Sunday Night | 64°F | Partly Cloudy | 8 mph NE | 11% |
| Monday | 92°F | Mostly Sunny | 6 to 9 mph NE | 5% |
| Monday Night | 64°F | Partly Cloudy then Slight Chance Rain Showers | 9 mph ENE | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hysham, MT
Last spring frost
May 10
First fall frost
Sep 29
Growing season
141 days
Hardiness zone
4b
Explore more for Hysham, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Hysham, Mt (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.