Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

McAlester, McAlester Regional Airport (KMLC)

Lat: 34.88°NLon: 95.78°WElev: 768ft.

75°F

24°C

Humidity 84%
Wind Speed S 3 mph
Barometer 29.74 in (1006.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 17 Jun 1:53 am CDT
Extended Forecast for

Lewisville OK

  • Overnight

    Overnight: Partly cloudy, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 91. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 71. Northeast wind around 5 mph.  Chance of precipitation is 70%.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Juneteenth

    Juneteenth: A 50 percent chance of showers and thunderstorms before 1pm.  Mostly cloudy, with a high near 87. East wind around 5 mph.

    High: 87 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 72. East wind around 5 mph becoming calm  in the evening.

    Low: 72 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 89. Southeast wind 5 to 10 mph.

    High: 89 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 73. South wind around 5 mph.
Wednesday
Sunny, with a high near 91. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 76. South wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Thursday
Mostly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Northeast wind around 5 mph. Chance of precipitation is 70%.
Juneteenth
A 50 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 87. East wind around 5 mph.
Friday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. East wind around 5 mph becoming calm in the evening.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. Southeast wind 5 to 10 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 92. South wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 77. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind 5 to 10 mph becoming west in the afternoon.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewisville OK
 35.11°N 95.28°W
1:50 am CDT Jun 17, 2026
2am CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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