Prosper Heat Index Hits 105 Today; Showers Possible Tomorrow - Jul 11, 12 PM
Prosper weather, updated every four hours — local forecasts you can trust.
Temperatures in Prosper, TX, are soaring this Saturday afternoon with a heat index near 105. While today remains sunny, tomorrow brings a chance of showers and thunderstorms.
Opal Fields
July 11, 2026/2 min read
National Weather Service radar for North Texas (KFWS)
*As of Jul 11, 12 PM local time.*
Current Conditions and Heat Advisory
It is currently Saturday afternoon in Prosper, Texas, and the heat is already intense. The air temperature stands at 90F, but the combination of heat and humidity pushes the feels-like temperature to 96F. The relative humidity is at 56%, with a dew point of 72F, creating a muggy atmosphere.
Winds are blowing from the south southwest at 8 mph, with gusts reaching 14 mph. The sky remains clear overhead.
Today and Tonight Forecast
The National Weather Service forecasts a high near 98F today, with heat index values climbing as high as 105. The sky will stay sunny throughout the day. As evening approaches, conditions will become mostly clear.
Temperatures will drop to a low near 78F, though they may rise slightly to around 80F overnight. The heat index will remain elevated, reaching up to 103. Winds will shift to the south at 5 to 10 mph.
The chance of precipitation is minimal at just 1%.
Tomorrow Outlook
Tomorrow, the heat will ease slightly with a high near 95F. The sky will be mostly sunny, but the chance of rain increases significantly. There is a slight chance of rain showers between 10am and 1pm, followed by a chance of showers and thunderstorms between 1pm and 4pm.
The overall chance of precipitation is 40%, with new rainfall amounts less than a tenth of an inch possible. Heat index values will stay high, peaking around 103. Winds will be light, coming from the south southwest at around 5 mph.
Safety Reminders
Given the high heat index values expected today and tomorrow, it is crucial to stay hydrated and limit midday exertion. Check on neighbors and loved ones who may be vulnerable to extreme heat. While tomorrow brings a chance of storms, the primary concern remains the oppressive heat. Stay cool and safe.
National Weather Service radar for North Texas (KFWS)
Temperatures in Prosper are climbing to near 91F today with a heat index reaching 105. A chance of showers and thunderstorms exists before 4am tonight.
