| National Weather Service Forecast for:
Plano, TX Issued by: National Weather Service Fort Worth/Dallas, TX |
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| Updated: 09/15/2026 6:06pm | ||||||||||||||||||||||||||||||||||||||||
| Plano, Collin County, Texas | ||||||||||||||||||||||||||||||||||||||||
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Heat Advisory issued September 15 at 12:32PM CDT until September 16 at 8:00PM CDT
| Tonight |
Clear, with a low around 81. Heat index values as high as 101. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. |
| Wednesday |
Sunny, with a high near 99. Heat index values as high as 104. South wind 5 to 10 mph. |
| Wednesday Night |
Mostly clear. Low around 80, with temperatures rising to around 82 overnight. Heat index values as high as 104. Southeast wind 5 to 10 mph. |
| Thursday |
Mostly sunny, with a high near 99. Heat index values as high as 109. South southeast wind around 5 mph. |
| Thursday Night |
Partly cloudy, with a low around 79. South southeast wind 5 to 10 mph. |
| Friday |
Sunny. High near 99, with temperatures falling to around 97 in the afternoon. South wind around 5 mph. |
| Friday Night |
Mostly clear, with a low around 77. South wind 5 to 10 mph. |
| Saturday |
Sunny, with a high near 99. South wind 5 to 10 mph. |
| Saturday Night |
Mostly clear, with a low around 77. South wind around 10 mph. |
| Sunday |
Sunny, with a high near 98. |
| Sunday Night |
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 75. Chance of precipitation is 40%. |
| Monday |
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 40%. |
| Monday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%. |
| Tuesday |
A slight chance of rain showers. Mostly sunny, with a high near 91. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Plano, TX.