McKinney Heat and Humidity Persist as Temperatures Climb Near 100 - Jul 1, 4 AM

As of Jul 1, 4 AM local time.

Current Conditions and Humidity

It is currently Wednesday overnight in McKinney, TX, and the air remains quite humid. The current air temperature is 81F, but the feels-like temperature is 85F due to the moisture in the air. Relative humidity is sitting at 74%, with a dew point of 72F.

Winds are blowing from the south at 10 mph, with gusts reaching up to 25 mph. The sky is clear, offering no relief from the warmth.

Today and Tomorrow Forecast

Today will be sunny with a high near 97F. The heat index values are expected to reach as high as 102F. South winds will range from 5 to 10 mph, with gusts as high as 20 mph.

The chance of precipitation is only 3%, so rain is not expected. Overnight lows will drop to near 78F, with temperatures rising to around 80F later in the night. Heat index values will remain as high as 99F during this period.

South southeast winds will be 5 to 15 mph.

Tomorrow will also be sunny, with a high near 96F. The heat index values could climb as high as 103F. South southeast winds will be 5 to 10 mph.

The chance of precipitation is 13%, still very low. Overnight lows will fall to near 77F, with temperatures rising to around 79F later in the night. The sky will become partly cloudy, and southeast winds will be 5 to 10 mph.

Safety and Alerts

There are no active National Weather Service or NOAA weather alerts in effect for McKinney. However, the combination of high temperatures and humidity requires caution. Heat index values exceeding 100F can lead to heat exhaustion or heat stroke if precautions are not taken.

It is important to stay hydrated by drinking plenty of water, even if you do not feel thirsty. Limit outdoor exertion during the hottest parts of the day, typically between 10 a.m. and 4 p.m. Wear lightweight, light-colored clothing that allows your skin to breathe.

Check on elderly neighbors or those with health conditions who may be more vulnerable to the heat. Keep vehicles parked in the shade when possible, as interior temperatures can rise rapidly. If you must be outside, seek air-conditioned spaces during breaks to cool down.

Stay aware of the signs of heat-related illness, such as dizziness, nausea, or excessive sweating, and seek medical attention if symptoms persist.

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Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data