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 >

Hazardous Weather Conditions

Current conditions at

Marysville Municipal Airport (KMYZ)

Lat: 39.86°NLon: 96.63°WElev: 1283ft.

Fair

82°F

28°C

Humidity 51%
Wind Speed SW 6 mph
Barometer 29.97 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 18 Aug 5:35 pm CDT
Extended Forecast for

Onaga KS

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 3am.  Low around 68. East wind around 5 mph becoming north after midnight.  Chance of precipitation is 80%.

    Low: 68 °F

    Showers
    Likely then
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon.  Cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind becoming northeast around 5 mph in the morning.  Chance of precipitation is 30%.

    High: 82 °F

    Chance
    T-storms then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 9pm.  Increasing clouds, with a low around 64. Northeast wind around 5 mph becoming calm.

    Low: 64 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 84. Calm wind becoming east around 5 mph.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph.

    High: 87 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 86. Calm wind becoming east around 5 mph in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 67. East wind around 5 mph.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 3am. Low around 68. East wind around 5 mph becoming north after midnight. Chance of precipitation is 80%.
Wednesday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon. Cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 9pm. Increasing clouds, with a low around 64. Northeast wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 84. Calm wind becoming east around 5 mph.
Thursday Night
Mostly clear, with a low around 66. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. Calm wind.
Saturday
Mostly sunny, with a high near 86. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. East wind around 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Partly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Onaga KS
 39.5°N 96.17°W
5:36 pm CDT Aug 18, 2026
5pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

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