Hysham, MT Weather & Growing Conditions
Overnight
29°F
Patchy Fog
Patchy fog. Partly cloudy. Low around 29, with temperatures rising to around 31 overnight. South southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Patchy Fog | 1 mph SSW | 0% |
| Wednesday | 48°F | Patchy Fog then Mostly Sunny | 1 to 6 mph NW | 0% |
| Wednesday Night | 30°F | Patchy Fog | 1 to 5 mph NE | 0% |
| Thursday | 52°F | Patchy Fog then Mostly Sunny | 3 to 8 mph SSE | 0% |
| Thursday Night | 34°F | Partly Cloudy | 2 to 6 mph NW | 4% |
| Friday | 53°F | Sunny | 3 to 10 mph WSW | 0% |
| Friday Night | 37°F | Partly Cloudy | 7 to 10 mph SW | 0% |
| Saturday | 57°F | Sunny | 3 to 10 mph W | 0% |
| Saturday Night | 35°F | Mostly Clear | 6 mph S | 0% |
| Sunday | 64°F | Mostly Sunny | 6 to 12 mph WSW | 0% |
| Sunday Night | 39°F | Partly Cloudy | 5 to 8 mph WNW | 1% |
| Monday | 56°F | Mostly Sunny | 6 mph WNW | 2% |
| Monday Night | 35°F | Partly Cloudy | 5 mph SE | 2% |
| Tuesday | 59°F | Mostly Sunny | 5 to 8 mph SSW | 0% |
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 Nov 4, 2026.