| National Weather Service Forecast for:
Plano, TX Issued by: National Weather Service Fort Worth/Dallas, TX |
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| Updated: 08/18/2026 11:47am | ||||||||||||||||||||||||||||||||||||||||
| Plano, Collin County, Texas | ||||||||||||||||||||||||||||||||||||||||
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Heat Advisory issued August 18 at 12:17PM CDT until August 18 at 12:00PM CDT
Extreme Heat Warning issued August 18 at 12:17PM CDT until August 19 at 8:00PM CDT
| This Afternoon |
Sunny, with a high near 104. Heat index values as high as 105. South southwest wind around 5 mph. |
| Tonight |
Clear. Low around 82, with temperatures rising to around 84 overnight. Heat index values as high as 105. South wind around 10 mph. |
| Wednesday |
Sunny, with a high near 104. Heat index values as high as 106. Southwest wind around 10 mph. |
| Wednesday Night |
Mostly clear. Low around 82, with temperatures rising to around 84 overnight. Heat index values as high as 105. South southwest wind around 10 mph. |
| Thursday |
Sunny, with a high near 104. South southwest wind 5 to 10 mph. |
| Thursday Night |
Mostly clear. Low around 82, with temperatures rising to around 85 overnight. South wind around 5 mph. |
| Friday |
Sunny, with a high near 103. South southwest wind around 5 mph. |
| Friday Night |
Mostly clear, with a low around 80. South wind around 5 mph. |
| Saturday |
Sunny, with a high near 104. South wind around 5 mph. |
| Saturday Night |
A slight chance of rain showers after 1am. Mostly clear, with a low around 80. Chance of precipitation is 20%. |
| Sunday |
A slight chance of rain showers before 7am. Sunny, with a high near 104. Chance of precipitation is 20%. |
| Sunday Night |
Mostly clear, with a low around 82. |
| Monday |
Sunny, with a high near 103. |
| Monday Night |
Mostly clear, with a low around 82. |
Forecast from NOAA-NWS for Plano, TX.