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5-day forecast / Prosper, TX

TuesdaySunny104° / 80° 1%
WednesdaySunny103° / 80°
ThursdaySunny99° / 80°
FridaySunny102° / 83°
SaturdayMostly Sunny101° / 83° 6%

Heat Advisory in Effect for Prosper as Temperatures Climb to 103F - Jul 20, 8 PM

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

A Heat Advisory is active for Prosper, TX, with heat index values reaching 109F tomorrow. Current conditions show a feels-like temperature of 101F.

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 20, 8 PM local time.*

Dangerous Heat Conditions Underway

A Heat Advisory is currently in effect for Prosper, Texas, signaling dangerous heat conditions for the area. The National Weather Service has issued this moderate-severity alert, which remains in place until July 21 at 8:00PM CDT. Residents are urged to take this warning seriously as temperatures and humidity levels rise significantly over the next 24 hours.

Current conditions in Prosper reflect the intensity of the heat. The air temperature is recorded at 91F, but the combination of heat and moisture makes it feel like 101F. The relative humidity stands at 56%, with a dew point of 73F, indicating quite humid air that traps heat close to the ground.

Winds are light, blowing from the south at 6 mph with gusts reaching 8 mph, under a clear sky.

Forecast for Today, Tonight, and Tomorrow

Today, Prosper will see a high near 98F with a low near 80F. There is no chance of precipitation, and skies will remain clear. As tonight approaches, conditions will stay clear with a low around 80F.

However, temperatures are expected to rise to around 82F during the overnight hours. The heat index will climb to as high as 104F. South winds will decrease to around 5 mph.

Tomorrow brings even more intense heat. The sky will be sunny with a high near 103F. The heat index is forecast to reach as high as 109F, creating hazardous conditions for anyone spending time outdoors.

Winds will shift to the west and remain light, between 0 to 5 mph. Tomorrow night will be clear with a low around 82F, though temperatures may rise to around 84F overnight. Heat index values will stay elevated at 107F, with southeast winds at 0 to 5 mph.

Safety Reminders

Given the active Heat Advisory and the high heat index values, it is critical to prioritize safety. Hydrate frequently and limit midday exertion to avoid heat-related illnesses. Check on neighbors, especially the elderly and those without air conditioning, to ensure they are safe. Wear lightweight, light-colored clothing and seek air-conditioned environments whenever possible during the peak heat hours.

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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