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

Norman / Max Westheimer (KOUN)

Lat: 35.24°NLon: 97.47°WElev: 1182ft.

Light Rain Fog/Mist

59°F

15°C

Humidity 96%
Wind Speed NE 5 mph
Barometer 30.05 in
Dewpoint 58°F (14°C)
Visibility 4.00 mi
Last update 21 May 5:50 am CDT
Extended Forecast for

3 Miles SSE Slaughterville OK

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am.  High near 67. East northeast wind around 6 mph.  Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 67 °F

    Showers

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am.  Mostly cloudy, with a low around 59. East wind 3 to 6 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Showers
    Likely

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing, with a high near 79. Light and variable wind.

    High: 79 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm.  Low around 61. Light southeast wind.  Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 79. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 79 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 62. Chance of precipitation is 70%.

    Low: 62 °F

    T-storms
    Likely then
    Showers
    Likely

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 79.

    High: 79 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Memorial Day

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

    High: 81 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 67. East northeast wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 59. East wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Cloudy through mid morning, then gradual clearing, with a high near 79. Light and variable wind.
Friday Night
Showers and possibly a thunderstorm. Low around 61. Light southeast wind. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79.
Sunday Night
Mostly cloudy, with a low around 61.
Memorial Day
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Slaughterville OK
 35.05°N 97.26°W
1:26 am CDT May 21, 2026
6am CDT May 21, 2026-6pm CDT May 27, 2026
 
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Additional Resources

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