Harman US

Hysham, MT Weather & Growing Conditions

This Afternoon
61°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 61, with temperatures falling to around 59 in the afternoon. Northeast wind around 15 mph. Chance of precipitation is 100%.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 61°F Showers And Thunderstorms 15 mph NE 98%
Tonight 51°F Showers And Thunderstorms 10 to 14 mph NE 94%
Sunday 60°F Rain Showers 10 mph ENE 88%
Sunday Night 48°F Slight Chance Rain Showers then Patchy Fog 8 mph E 15%
Monday 67°F Patchy Fog then Mostly Cloudy 6 to 10 mph SE 5%
Monday Night 48°F Mostly Clear then Patchy Fog 7 to 12 mph ESE 0%
Tuesday 75°F Patchy Fog then Sunny 8 mph SE 0%
Tuesday Night 52°F Mostly Clear 6 mph ESE 2%
Wednesday 77°F Partly Sunny 2 to 6 mph SSE 5%
Wednesday Night 52°F Partly Cloudy 3 mph SSE 4%
Thursday 79°F Sunny 3 to 8 mph SW 3%
Thursday Night 53°F Mostly Clear 7 mph E 2%
Friday 79°F Mostly Sunny 5 to 10 mph SE 1%
Friday Night 52°F Partly Cloudy 8 mph E 5%

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 Sep 19, 2026.