Back to Weather

5-day forecast / Richardson, TX

TuesdaySunny101° / 81°
WednesdaySunny102° / 82°
ThursdayMostly Sunny102° / 83°
FridaySunny103° / 83° 4%
SaturdaySunny101° / 78° 9%

Heat Advisory in Effect for Richardson as Temperatures Climb Near 104 Degrees - Jul 20, 8 PM

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

A Heat Advisory is active for Richardson, TX, with current feels-like temperatures at 99F. Highs near 100F today, rising to 104F tomorrow.

Reese Janssen

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.*

Current Conditions and Alert Status

A Heat Advisory is currently in effect for Richardson, Texas, signaling moderate severity and expected urgency. The National Weather Service has issued this alert to warn residents of dangerously hot conditions. As of this evening, the air temperature stands at 99F, with a feels-like temperature also at 99F.

The relative humidity is at 29%, with a dew point of 61F. Winds are light at 3 mph, though gusts have reached 14 mph. The sky remains mostly clear, allowing heat to linger.

Forecast for Today and Tomorrow

Today, residents can expect a high near 100F under mostly clear skies. There is no chance of precipitation, with the low expected to drop to near 81F. Overnight, temperatures will initially fall but then rise to around 83F. The heat index will reach as high as 104, with south winds blowing between 5 to 10 mph.

Tomorrow, conditions will intensify. The sky will be sunny, with a high near 104F. The heat index is forecast to climb as high as 109.

Winds will shift to the west southwest at around 5 mph. Overnight into tomorrow night, skies will clear, with a low around 84F. Temperatures will rise again to around 86F overnight, with heat index values peaking at 107.

South winds will be light, ranging from 0 to 5 mph.

Safety Reminders

Given the active Heat Advisory and the extreme heat index values forecasted for the next 24 hours, it is critical to take precautions. Hydrate frequently and limit midday exertion to avoid heat-related illnesses. Check on neighbors, especially the elderly and those without air conditioning.

Keep pets indoors and never leave them in vehicles. Stay in air-conditioned spaces as much as 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

Share

Reese Janssen

Reese Janssen covers weather, storms, and seasonal life around Richardson.

Related Stories

More in Sport