Hysham, MT Weather & Growing Conditions
Overnight
57°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 57, with temperatures rising to around 59 overnight. North northeast wind around 8 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Showers And Thunderstorms | 8 mph NNE | 92% |
| Saturday | 64°F | Showers And Thunderstorms | 8 to 12 mph NE | 100% |
| Saturday Night | 52°F | Patchy Fog | 10 mph ENE | 92% |
| Sunday | 63°F | Rain Showers | 7 mph ENE | 79% |
| Sunday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 6 mph ESE | 17% |
| Monday | 72°F | Partly Sunny | 5 mph SE | 0% |
| Monday Night | 49°F | Mostly Clear | 2 to 7 mph ESE | 0% |
| Tuesday | 79°F | Sunny | 2 mph S | 0% |
| Tuesday Night | 52°F | Mostly Clear then Slight Chance Rain Showers | 3 mph ESE | 15% |
| Wednesday | 81°F | Mostly Sunny | 2 mph SE | 6% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Partly Cloudy | 2 mph SE | 15% |
| Thursday | 83°F | Sunny | 3 mph SSW | 0% |
| Thursday Night | 54°F | Mostly Clear | 5 mph ESE | 1% |
| Friday | 83°F | Mostly Sunny | 5 mph SSE | 0% |
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 Sep 19, 2026.