| National Weather Service Forecast for:
Plano, TX Issued by: National Weather Service Fort Worth/Dallas, TX |
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| Updated: 07/21/2026 6:12pm | ||||||||||||||||||||||||||||||||||||||||
| Plano, Collin County, Texas | ||||||||||||||||||||||||||||||||||||||||
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Air Quality Alert issued July 21 at 2:42PM CDT
Extreme Heat Warning issued July 21 at 1:00PM CDT until July 22 at 8:00PM CDT
| Tonight |
Clear. Low around 84, with temperatures rising to around 86 overnight. Heat index values as high as 109. South southeast wind 0 to 5 mph. |
| Wednesday |
Sunny, with a high near 102. Heat index values as high as 113. Northeast wind 5 to 10 mph. |
| Wednesday Night |
Clear. Low around 80, with temperatures rising to around 82 overnight. Heat index values as high as 108. East northeast wind 5 to 10 mph. |
| Thursday |
Sunny, with a high near 99. Heat index values as high as 105. East wind around 10 mph. |
| Thursday Night |
Mostly clear. Low around 80, with temperatures rising to around 82 overnight. East southeast wind around 10 mph. |
| Friday |
Sunny, with a high near 101. Southeast wind around 10 mph. |
| Friday Night |
Mostly clear, with a low around 83. South southeast wind 10 to 15 mph. |
| Saturday |
Mostly sunny, with a high near 101. South wind around 10 mph. |
| Saturday Night |
Partly cloudy, with a low around 83. South wind around 10 mph, with gusts as high as 20 mph. |
| Sunday |
Sunny, with a high near 102. |
| Sunday Night |
Clear, with a low around 82. |
| Monday |
Sunny, with a high near 103. |
| Monday Night |
Mostly clear, with a low around 83. |
| Tuesday |
Sunny, with a high near 104. |
Forecast from NOAA-NWS for Plano, TX.