*As of Jul 22, 4 AM local time.*
Severe Heat Alert in Effect
Sherman, TX, is currently under an Extreme Heat Warning, a severe alert issued by the National Weather Service. This warning remains active until 8:00 PM CDT on July 22. The agency has designated this event as severe in intensity, indicating that dangerous heat conditions are expected to persist through the evening.
Current conditions reflect the onset of this heat event. As of Wednesday overnight, the air temperature stands at 82F, but the combination of heat and moisture makes it feel like 88F. The relative humidity is at 76%, with a dew point of 74F, creating a muggy atmosphere despite the clear sky. Winds are currently calm at 0 mph, with occasional gusts reaching 6 mph.
Forecast for Today and Tomorrow
Today, Sherman will experience sunny skies with a high near 100F. The National Weather Service forecasts heat index values as high as 109F, significantly amplifying the risk of heat-related illnesses. Northeast winds will pick up slightly, blowing at 5 to 10 mph. The chance of precipitation is minimal at just 2%.
Overnight, conditions will remain clear. Temperatures will drop to a low around 80F, though they may rise to around 82F as the night progresses. Winds will shift to the west and remain light at around 0 mph.
Tomorrow, the heat will ease slightly but remain dangerous. Highs will reach near 95F, with heat index values peaking at 101F. Sunny skies will continue, and the chance of rain is negligible at 1%. East winds will blow at 5 to 10 mph. Overnight tomorrow, clear skies will return with a low around 76F, and east southeast winds will persist at 5 to 10 mph.
