Hysham, MT Weather & Growing Conditions
Today
50°F
Mostly Sunny
Mostly sunny. High near 50, with temperatures falling to around 44 in the afternoon. West northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Mostly Sunny | 5 mph WNW | 0% |
| Tonight | 30°F | Patchy Fog | 2 mph SSW | 0% |
| Thursday | 54°F | Patchy Fog then Mostly Sunny | 2 mph S | 0% |
| Thursday Night | 34°F | Mostly Cloudy | 2 mph WNW | 5% |
| Friday | 54°F | Sunny | 2 to 10 mph SW | 0% |
| Friday Night | 37°F | Partly Cloudy | 3 to 9 mph SW | 0% |
| Saturday | 59°F | Sunny | 1 to 9 mph WSW | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph S | 0% |
| Sunday | 65°F | Mostly Sunny | 2 to 8 mph WSW | 0% |
| Sunday Night | 39°F | Partly Cloudy | 5 mph WNW | 1% |
| Monday | 58°F | Mostly Sunny | 3 mph WNW | 1% |
| Monday Night | 36°F | Partly Cloudy | 2 mph SSE | 1% |
| Tuesday | 61°F | Mostly Sunny | 2 to 7 mph WSW | 0% |
| Tuesday Night | 38°F | Partly Cloudy | 3 mph SW | 1% |
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 Nov 4, 2026.