| National Weather Service Forecast for:
Plano, TX Issued by: National Weather Service Fort Worth/Dallas, TX |
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| Updated: 09/21/2026 1:26am | ||||||||||||||||||||||||||||||||||||||||
| Plano, Collin County, Texas | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
A slight chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 74. East southeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible. |
| Monday |
A chance of showers and thunderstorms after 1pm. Sunny. High near 96, with temperatures falling to around 92 in the afternoon. Heat index values as high as 98. Northeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday Night |
A chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 74. Northeast wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Tuesday |
Mostly sunny. High near 95, with temperatures falling to around 92 in the afternoon. Heat index values as high as 102. North northeast wind 5 to 10 mph. |
| Tuesday Night |
Partly cloudy. Low around 73, with temperatures rising to around 75 overnight. East northeast wind 5 to 10 mph. |
| Wednesday |
Mostly sunny. High near 94, with temperatures falling to around 92 in the afternoon. East wind around 10 mph. |
| Wednesday Night |
Partly cloudy, with a low around 72. East wind 5 to 10 mph. |
| Thursday |
Mostly sunny, with a high near 93. East wind 5 to 10 mph. |
| Thursday Night |
Partly cloudy, with a low around 70. East wind 5 to 10 mph. |
| Friday |
Mostly sunny, with a high near 91. |
| Friday Night |
Partly cloudy, with a low around 71. |
| Saturday |
Mostly sunny, with a high near 92. |
| Saturday Night |
Partly cloudy, with a low around 72. |
| Sunday |
A slight chance of rain showers after 7am. Mostly sunny, with a high near 95. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Plano, TX.