Dangerous Heat Index Hits 101F in Prosper as Temperatures Climb to 99F - Aug 9, 5 PM

*As of Aug 9, 5 PM local time.*

Dangerous Heat Conditions

Dangerous heat is currently affecting Prosper, TX, with the air temperature at 95F while the heat index makes it feel like 101F. The atmosphere is quite humid, with a dew point of 70F and relative humidity at 44%. Winds are blowing from the south at 8 mph, with gusts reaching 10 mph, under clear skies.

Today, the sun will dominate the sky, pushing the high near 99F. The National Weather Service indicates heat index values as high as 103 during the day. South winds will increase to around 10 mph.

Overnight, conditions will remain mostly clear. Temperatures will drop to a low near 78F, though they may rise to around 80F later in the night. The heat index will remain elevated, reaching up to 100.

Winds will strengthen to 10 to 15 mph from the south.

Outlook and Safety

Tomorrow brings another sunny day with a high near 99F. The heat index is expected to peak at 102. South winds will continue at 10 to 15 mph.

As tomorrow night approaches, skies will clear, leading to a low near 79F. Temperatures may rise to around 81F overnight, with heat index values up to 101. Winds will persist at 10 to 15 mph from the south.

There are no active National Weather Service or NOAA weather alerts in effect for this area. However, the persistent heat and humidity require caution. Residents should stay hydrated and limit midday exertion to avoid heat-related illnesses.

Check on neighbors and vulnerable individuals who may be less able to cope with the extreme temperatures. Keep vehicles parked in shade when possible, as interiors can heat up rapidly. Monitor local updates for any changes in conditions, but for now, the focus remains on managing the significant heat stress.

View larger

Sources

https://radar.weather.gov

https://api.weather.gov

https://open-meteo.com