| National Weather Service Forecast for:
Plano, TX Issued by: National Weather Service Fort Worth/Dallas, TX |
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| Updated: 09/20/2026 1:26am | ||||||||||||||||||||||||||||||||||||||||
| Plano, Collin County, Texas | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Partly cloudy, with a low around 78. South wind around 10 mph. |
| Sunday |
Mostly sunny. High near 96, with temperatures falling to around 94 in the afternoon. Heat index values as high as 100. South wind 5 to 10 mph. |
| Sunday Night |
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 72. Heat index values as high as 97. East southeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Monday |
A chance of showers and thunderstorms. Mostly sunny. High near 91, with temperatures falling to around 89 in the afternoon. Heat index values as high as 99. East northeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. |
| Monday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Northeast wind around 5 mph. Chance of precipitation is 40%. |
| Tuesday |
A slight chance of showers and thunderstorms before 7am. Mostly sunny. High near 92, with temperatures falling to around 90 in the afternoon. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. |
| Tuesday Night |
Partly cloudy, with a low around 71. Northeast wind around 10 mph. |
| Wednesday |
Mostly sunny, with a high near 92. East northeast wind around 10 mph. |
| Wednesday Night |
Partly cloudy, with a low around 70. East wind 5 to 10 mph. |
| Thursday |
Mostly sunny, with a high near 92. |
| Thursday Night |
Partly cloudy, with a low around 70. |
| Friday |
Mostly sunny, with a high near 89. |
| Friday Night |
Mostly cloudy, with a low around 70. |
| Saturday |
A slight chance of rain showers between 7am and 1pm. Partly sunny, with a high near 88. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for Plano, TX.