National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Widespread Showers and Thunderstorms in Southern California and the Southern Plains into the Mississippi Valley

Isolated strong to severe thunderstorms and widespread heavy rainfall are possible across the southern Plains into Arkansas. Widespread showers with a slight chance of thunderstorms are possible across southern California. Urban flooding, rock and mudslides as well as minor debris flows near burn scars are possible. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Overcast

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 29.91 in (1013.1 mb)
Dewpoint 63°F (17°C)
Visibility 7.00 mi
Last update 21 Nov 5:53 am CST
Extended Forecast for

Allen TX

  • Today

    Today: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 76. West southwest wind 5 to 10 mph.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. West wind around 5 mph becoming north northwest after midnight.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67. North northwest wind 5 to 10 mph.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. North wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 69. East northeast wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 58. Southeast wind around 10 mph. Chance of precipitation is 90%.

    Low: 58 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before noon, then a chance of showers. High near 72. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 72 °F

    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Clear, with a low around 51. Southwest wind around 5 mph becoming northwest after midnight.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. North wind 5 to 10 mph.

    High: 70 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 76. West southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 50. West wind around 5 mph becoming north northwest after midnight.
Saturday
Mostly sunny, with a high near 67. North northwest wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 50. North wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 69. East northeast wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 40%.
Sunday Night
Showers and possibly a thunderstorm. Low around 58. Southeast wind around 10 mph. Chance of precipitation is 90%.
Monday
Showers and possibly a thunderstorm before noon, then a chance of showers. High near 72. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Monday Night
Clear, with a low around 51. Southwest wind around 5 mph becoming northwest after midnight.
Tuesday
Sunny, with a high near 70. North wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 36.
Thanksgiving Day
Sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Allen TX
 33.1°N 96.67°W (Elev. 656 ft)
Last Update:
5:06 am CST Nov 21, 2025
Forecast Valid:
6am CST Nov 21, 2025-6pm CST Nov 27, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation