National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Storms and Heavy Rainfall in the Plains and Southern Appalachians; Hazardous Heat in the South and Southeast

Severe thunderstorms with heavy rainfall will be possible across the southern Appalachians through this evening. Thunderstorms are also expected from the northern/central Plains into portions of the Midwest through Tuesday, and severe storms may produce large hail and damaging wind gusts. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Hysham Hills I-94 MP 59.9 (MTHYH)

Lat: 46.16492°NLon: 107.30927°WElev: 3351.0ft.

NA

85°F

29°C

Humidity 20%
Wind Speed WNW 7 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Heat Index82°F (28°C)
Last update 17 Aug 03:30 PM MDT
Extended Forecast for

Hysham MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. West wind 3 to 5 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 59. North northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 20%.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 10pm. Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Sunny and hot, with a high near 91. Light and variable wind becoming west northwest around 6 mph in the morning.

    High: 91 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. North northwest wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 93. Light and variable wind.

    High: 93 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. North wind 5 to 7 mph becoming calm after midnight.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and hot, with a high near 90. Calm wind becoming east northeast 5 to 9 mph in the morning.

    High: 90 °F

    Hot

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. West wind 3 to 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 59. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 20%.
Tuesday Night
A 40 percent chance of showers after 10pm. Mostly cloudy, with a low around 57. Calm wind.
Wednesday
Sunny and hot, with a high near 91. Light and variable wind becoming west northwest around 6 mph in the morning.
Wednesday Night
Mostly clear, with a low around 59. North northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 93. Light and variable wind.
Thursday Night
Mostly clear, with a low around 61. North wind 5 to 7 mph becoming calm after midnight.
Friday
Mostly sunny and hot, with a high near 90. Calm wind becoming east northeast 5 to 9 mph in the morning.
Friday Night
Partly cloudy, with a low around 64. East wind around 9 mph.
Saturday
Partly sunny and hot, with a high near 92. East wind 7 to 9 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 65. East wind 3 to 8 mph.
Sunday
Mostly sunny and hot, with a high near 90. North northwest wind 3 to 6 mph.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 61. North northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 89. Calm wind becoming north northeast around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hysham MT
 46.3°N 107.25°W (Elev. 2618 ft)
Last Update:
1:03 pm MDT Aug 17, 2026
Forecast Valid:
3pm MDT Aug 17, 2026-6pm MDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation