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5-day forecast / Sherman, TX

FridayMostly Sunny101° / 81° 4%
SaturdaySlight Chance Showers And Thunderstorms105° / 79° 19%
SundaySunny105° / 83° 7%
MondaySunny106° / 83° 3%
TuesdaySlight Chance Rain Showers then Slight Chance Showers And Thunderstorms107° / 81° 15%

Sherman Heat Advisory: Temperatures Near 101F, Humidity Low - Aug 21, 2 PM

Sherman skies, every four hours — clear, local, and weather you can trust.

A Heat Advisory is active in Sherman as temperatures reach 91F with a heat index near 103F. Expect mostly sunny skies, light south winds, and a slight chance of brief storms today and tomorrow.

Carmen Solis

August 21, 20262 min read

National Weather Service radar for North Texas (KFWS)
National Weather Service radar for North Texas (KFWS)

*As of Aug 21, 2 PM local time.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Sherman, issued by the National Weather Service in Fort Worth. This moderate-severity alert remains active until 8:00 PM CDT on August 22. As of this afternoon, the air temperature stands at 91F, with a feels-like value of 92F.

The relative humidity is 38%, and the dew point is 63F. Winds are blowing from the south at 9 mph, with gusts recorded at 7 mph. The sky is clear, providing direct solar exposure that contributes to the elevated heat index values.

Today and Tonight Outlook

Residents should expect a high near 101F today, with heat index values potentially reaching 103F. There is a slight chance of showers and thunderstorms before 4 PM, with a 15% chance of precipitation. The sky will remain mostly sunny.

Tonight, temperatures will drop to a low near 81F, though they may rise to around 83F overnight. A slight chance of showers and thunderstorms is possible after 4 AM. The sky will be partly cloudy, and heat index values could reach 102F.

New rainfall amounts are expected to be less than a tenth of an inch.

Tomorrow and Safety Reminders

Tomorrow will be hotter, with a high near 105F and heat index values as high as 107F. The low will be near 79F, rising to around 81F overnight. A slight chance of showers and thunderstorms persists, with a 19% chance of precipitation.

The sky will be mostly sunny, and winds will shift to the south-southeast at 5 to 10 mph. Given the extreme heat, it is crucial to stay hydrated and limit midday exertion. Check on neighbors and vulnerable individuals, and seek air-conditioned environments during the hottest parts of the day.

Avoid prolonged outdoor exposure, especially when the heat index exceeds 100F.

National Weather Service radar for North Texas (KFWS)

Sources

https://radar.weather.gov

https://api.weather.gov

https://open-meteo.com

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Carmen Solis

Carmen Solis covers weather, the environment, and outdoor life around Sherman.

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