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5-day forecast / Prosper, TX

WednesdaySunny103° / 78° 1%
ThursdaySunny98° / 79° 1%
FridaySunny100° / 82° 1%
SaturdayMostly Sunny101° / 82° 4%
SundaySunny101° / 82° 1%

Extreme Heat Warning in Effect for Prosper as Temperatures Soar Near 104F - Jul 21, 9 AM

Prosper weather, updated every four hours — local forecasts you can trust.

An Extreme Heat Warning is active for Prosper, TX, with current feels-like temperatures at 91F. Today's high will reach near 104F with heat indices up to 113F.

Opal Fields

July 21, 20262 min read

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

*As of Jul 21, 9 AM local time.*

Severe Heat Alert Active

An Extreme Heat Warning is currently in effect for Prosper, Texas. This severe alert indicates dangerous heat conditions that pose significant risks to health and safety. The warning is issued by the National Weather Service and remains active until the evening hours. Residents are urged to take immediate precautions to avoid heat-related illnesses.

Current Conditions and Forecast

Right now, the air temperature in Prosper is 84F, but the combination of heat and humidity makes it feel like 91F. The relative humidity is at 70%, with a dew point of 73F, creating a muggy atmosphere. Winds are light at 6 mph, with gusts reaching up to 14 mph, under a clear sky.

Today, the sun will remain out with a high near 104F. The National Weather Service forecasts heat index values as high as 113F. Northwest winds will be calm, ranging from 0 to 5 mph. The chance of precipitation is just 1%, so expect dry and intensely hot conditions.

Tonight, skies will remain clear with a low around 83F. Temperatures may rise slightly to around 85F overnight. Heat index values will stay elevated, reaching as high as 111F. Southeast winds will be light, between 0 and 5 mph.

Tomorrow, the heat continues with sunny skies and a high near 103F. Heat index values are expected to peak at 112F. Northeast winds will pick up slightly, blowing at 5 to 10 mph.

The chance of rain is 0%. Tomorrow night will be mostly clear with a low around 80F, rising to about 82F overnight. Heat index values will be around 109F, with east winds near 10 mph.

Safety Reminders

Given the extreme heat and high humidity, it is critical to stay hydrated and limit time spent outdoors, especially during the hottest parts of the day. Check on neighbors and vulnerable individuals regularly. Keep vehicles parked in the shade and never leave people or pets inside closed cars. If you must go outside, seek air-conditioned spaces frequently and wear lightweight, light-colored clothing.

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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