Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

Big Horn County Airport (K00U)

Lat: 45.74439°NLon: 107.66044°WElev: 3025.0ft.

Mostly Cloudy

70°F

21°C

Humidity 64%
Wind Speed NNE 19 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 57°F (14°C)
Visibility 7.00 mi
Last update 18 Aug 05:50 PM MDT
Extended Forecast for

2 Miles WNW Hardin MT

Severe T-storm Watch until August 18, 09:00pm
Click here for hazard details and duration
...
  •  
    Severe T-storm Watch until August 18, 09:00pm

    NOW until 9:00pm Tue

    Severe T-storm Watch

  • Tonight

    Low: 55 °F

    Severe
    Thunderstorms
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90. Light and variable wind becoming west northwest 6 to 11 mph in the morning.

    High: 90 °F

    Hot

  • Wednesday Night

    Wednesday Night: Patchy smoke. Partly cloudy, with a low around 55. North northwest wind around 6 mph becoming calm  in the evening.

    Low: 55 °F

    Patchy Smoke

  • Thursday

    Thursday: Sunny and hot, with a high near 94. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 94 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. North northeast wind around 6 mph becoming light and variable  after midnight.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 93. Calm wind becoming northeast 5 to 9 mph in the afternoon.

    High: 93 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. East northeast wind 6 to 11 mph.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and hot, with a high near 92. Light and variable wind becoming northwest 5 to 8 mph in the afternoon.

    High: 92 °F

    Hot

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming mostly clear, with a low around 55. East northeast wind 5 to 8 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Wednesday
Sunny and hot, with a high near 90. Light and variable wind becoming west northwest 6 to 11 mph in the morning.
Wednesday Night
Patchy smoke. Partly cloudy, with a low around 55. North northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 94. Calm wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 60. North northeast wind around 6 mph becoming light and variable after midnight.
Friday
Sunny and hot, with a high near 93. Calm wind becoming northeast 5 to 9 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 63. East northeast wind 6 to 11 mph.
Saturday
Partly sunny and hot, with a high near 92. Light and variable wind becoming northwest 5 to 8 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 61. Northeast wind 5 to 8 mph becoming light and variable after midnight.
Sunday
Mostly sunny and hot, with a high near 91. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59. North wind 5 to 7 mph becoming calm after midnight.
Monday
Sunny and hot, with a high near 90. Calm wind becoming northeast around 6 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59. Northeast wind around 6 mph becoming light and variable after midnight.
Tuesday
Mostly sunny and hot, with a high near 92. Calm wind becoming east northeast around 6 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Hardin MT
 45.74°N 107.66°W (Elev. 2999 ft)
5:08 pm MDT Aug 18, 2026
6pm MDT Aug 18, 2026-6pm MDT Aug 25, 2026
 
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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