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Heat Advisory HEAT ADVISORY - Houston  - Richmond

NWS Southern Plains Regional Radar WU South Central Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 21-Aug-2026 11:14am  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 90.0, Max: 89.4, Min: 75.9 90°F
Warmer 3.1°F than last hour.

Extremely Hot

Feels like: 111°F

24-hr difference
-0.9°FColder 0.9°F than yesterday at this time.
  Today Yesterday
High: 89.4°F
11:05am 		99.7°F
4:00pm
Low: 75.9°F
5:30am 		73.8°F
6:20am
Wind from SW SW
9.2
Gust:
 10.3 mph
3 Bft - Gentle breeze
Today: 10.3 mph 10:20am
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 0.45 in
Season Total: 36.57 in
7 days since last rain.
Tonight

Tonight: Mostly Clear
Mostly Clear
Humidity & Barometer Almanac Moon
Humidity: 77 % Decreased 10.0% since last hour.
Dew Point: 81.8°F Decreased 0.7°F since last hour.
Barometer: 30.04 inHg Rising 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 6:54am
Sunset: 7:57pm
Moonset: 12:49am
Moonrise: 3:39pm
Waxing Gibbous
Waxing Gibbous, Moon at 8 days in cycle
65%
Illuminated
UV Index Solar Radiation
   7     High 
High: 7 @ 10:50am
791.27 W/m2
High: 768.27 @  11:10am
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Sunny
Sunny

Hi 101 °F		 NWS forecast: Sunny, with a high near 101. Heat index values as high as 109. Southwest wind around 5 mph.
 
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 78 °F		 NWS forecast: Mostly clear, with a low around 78. Heat index values as high as 108. South wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.