Harman US

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

WhenTempForecastWindPrecip
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.