NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Thu, Aug 20, 2026 at 10:40:25 am CDT

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Heat Advisory

Thursday

Friday

The Outlook Ahead

Stay Safe From The Heat

A Heat Advisory is in effect Thursday and Friday for peak heat index readings between 106°-110°F. This advisory may need to be extended into the weekend.

Hot weather is expected on Thursday with highs in the 90s to triple digits. Heat indices will range from 106-110 degrees. With these hot conditions, remember to stay hydrated and take breaks indoors to cool off.

Hot weather is to continue on Friday with highs in the 90s to triple digits. Heat indices will range from 106-110 degrees. With these hot conditions, remember to stay hydrated and take breaks indoors to cool off.

Hot and humid conditions continue with high temperatures mostly in the 90s to triple digits. Max Heat indices are expected to reach 100-113 degrees. Near zero rain chances, though there is a possibility of isolated showers along the sea breeze this weekend. Please practice heat safety by checking on the elderly, children, and pets, staying cool and hydrated, and wearing light-weight, light-colored clothing.

Practice HEAT SAFETY Wherever You Are. Heat related deaths are preventable. Protect yourself and others from the impacts of heat waves. Job Sites: Stay hydrated and take breaks in the shade as often as possible. Indoors: Check up on the elderly, sick and those without AC. Vehicles: Never leave kids or pets unattended - LOOK before you LOCK. Outdoors: Limit strenuous outdoor activities, find shade, and stay hydrated. weather.gov/heat

Current Weather Observations...

Location	Time (CDT)	Weather	Vsby. (SM)	Temp. (ºF)	Dewpt. (ºF)	Hum. (%)	Wind (mph)	Wind Chill / Heat Index (ºF)	Pres. (in)
Bryan	09:35	Partly Cloudy	10	85	75	74	SSW 7	93 [HI]	30.04
College Station	09:53	Partly Cloudy	10	86	76	72	SSW 10	96 [HI]	30.03
Caldwell	09:55	Clear	10	86	75	70	SSW 10	95 [HI]	30.04
Huntsville	09:53	Clear	10	86	75	69	SW 9	95 [HI]	30.04
Navasota	10:15	Partly Cloudy	10	88	83	85	SSW 13	108 [HI]	30.02
Brenham	10:15	Mostly Cloudy	10	86	76	72	SSW 12	96 [HI]	30.04
Conroe	09:53	Clear	10	88	76	67	SSW 6G16	99 [HI]	30.04
Cleveland	10:15	Clear	10				CALM	-	30.06
Liberty	10:15	Mostly Cloudy	8	87	80	79	VRB 7	103 [HI]	30.03
Columbus	10:15	Clear	10	89	75	62	SW 10	99 [HI]	30.04
Spring	09:53	Mostly Clear	7	87	78	74	SSW 8G18	100 [HI]	30.03
Houston Intercontinental Aprt	09:53	Partly Cloudy	10	89	77	67	WSW 9	102 [HI]	30.03
Katy/Brookshire	10:15	Partly Cloudy	7	89	78	70	SW 9	103 [HI]	30.05
Texas Medical Center Heliport	10:15	Mostly Cloudy	10	86	77	74	VRB 5	97 [HI]	30.03
Sugar Land	09:53	Mostly Clear	10	88	79	74	SSW 7	103 [HI]	30.03
Houston Hobby Airport	09:53	Partly Cloudy	10	87	78	74	SSW 10	100 [HI]	30.02
Arcola/Sienna	10:15	Mostly Cloudy	10	89	77	67	SSW 5	102 [HI]	30.05
Pearland	09:53	Mostly Cloudy	9	87	78	74	WSW 7	100 [HI]	30.05
Ellington Field	09:54	Partly Cloudy	8	87	78	74	S 13	100 [HI]	30.02
La Porte	10:15	Partly Cloudy	10	89	77	66	WSW 10	102 [HI]	30.05
Wharton	10:15	Partly Cloudy	10	89	76	65	SW 12	100 [HI]	30.04
Angleton/Lake Jackson	09:53	Clear	10	88	78	72	SSW 9	102 [HI]	30.03
Galveston	09:52	Partly Cloudy	10	90	78	68	SSW 12	105 [HI]	30.04
Bay City	10:15	Partly Cloudy	10	88	80	76	SSW 13	105 [HI]	30.00
Palacios	09:53	Mostly Clear	10	88	77	70	S 14	100 [HI]	30.02
Rig 20 Miles SE of Matagorda	10:20		10	86	80	84	SSW 16	101 [HI]	30.08

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