Hysham, MT Weather & Growing Conditions
Today
61°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 61, with temperatures falling to around 58 in the afternoon. Northeast wind around 12 mph. Chance of precipitation is 100%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Showers And Thunderstorms | 12 mph NE | 100% |
| Tonight | 53°F | Patchy Fog | 12 mph NE | 94% |
| Sunday | 60°F | Rain Showers | 8 mph ENE | 89% |
| Sunday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 6 mph E | 17% |
| Monday | 70°F | Partly Sunny | 3 mph SE | 0% |
| Monday Night | 50°F | Mostly Clear | 2 to 6 mph SE | 0% |
| Tuesday | 76°F | Sunny | 3 mph SSW | 0% |
| Tuesday Night | 53°F | Partly Cloudy then Slight Chance Rain Showers | 3 mph ESE | 15% |
| Wednesday | 78°F | Mostly Sunny | 3 mph SSE | 6% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 3 mph SSE | 4% |
| Thursday | 80°F | Sunny | 5 mph SSW | 0% |
| Thursday Night | 55°F | Mostly Clear | 2 to 6 mph ESE | 1% |
| Friday | 80°F | Mostly Sunny | 5 mph S | 0% |
| Friday Night | 53°F | Partly Cloudy | 6 mph S | 7% |
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 (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.