Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

McAlester, McAlester Regional Airport (KMLC)

Lat: 34.88°NLon: 95.78°WElev: 768ft.

Partly Cloudy

69°F

21°C

Humidity 87%
Wind Speed E 7 mph
Barometer 30.06 in (1017.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 21 May 8:53 am CDT
Extended Forecast for

7 Miles W Lamar OK

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am.  High near 71. Calm wind becoming north 5 to 7 mph in the afternoon.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 71 °F

    Showers
    Likely then
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm.  Low around 61. North northeast wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 61 °F

    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms.  Cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph.

    High: 80 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 62. Light east southeast wind.  Chance of precipitation is 60%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 81. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 81 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Memorial Day

    Memorial Day: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. High near 71. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Showers and possibly a thunderstorm. Low around 61. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday
A 20 percent chance of showers and thunderstorms. Cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Light east southeast wind. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Sunday Night
Mostly cloudy, with a low around 63.
Memorial Day
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 81.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles W Lamar OK
 35.09°N 96.24°W
1:26 am CDT May 21, 2026
9am CDT May 21, 2026-6pm CDT May 27, 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