NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sat, Sep 5, 2026 at 9:22:24 am CDT

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Key Messages: Plume of deeper tropical moisture combined with an upper level disturbance will lead to scattered to widespread showers/storms today. Some of these storms may be capable of producing locally heavy rainfall. Grounds in areas east of I-45 remain very saturated from previous rounds of rainfall. There is a Marginal Risk (level 1 of 4) of Excessive Rainfall for all of Southeast Texas today. Potential Impacts: Localized instances of street flooding, especially in low-lying areas, areas with poor drainage, and areas already saturated from previous rounds of rain. Rainfall rates of 2-3+”/hr possible in the heaviest downpours. Actions: Have multiple ways to receive alerts. Stay up to date with the latest forecasts.

Scattered to widespread showers and thunderstorms, especially east of I-45. Light southeasterly winds outside of any storms. Highs in the low to mid 90s.

Isolated showers/storms possible overnight, mainly west of I-45. Light and variable winds. Lows mainly in the mid to upper 70s.

Scattered to widespread showers and thunderstorms especially south of I-10. Light southerly winds outside of any storms. High temperatures in the low to mid 90s.

Daily chances for showers and thunderstorms continues going into next week. Highs will be in the upper 80s/90s with lows in the 70s/lower 80s.

Current Weather Observations...

Location	Time (CDT)	Weather	Vsby. (SM)	Temp. (ºF)	Dewpt. (ºF)	Hum. (%)	Wind (mph)	Wind Chill / Heat Index (ºF)	Pres. (in)
Bryan	03:55	Clear	10	78	75	88	CALM	-	29.94
College Station	03:53	Clear	10	78	75	90	CALM	-	29.92
Caldwell	03:55	Clear	10	75	73	94	CALM	-	29.94
Huntsville	03:53	Clear	10	77	74	90	CALM	-	29.92
Navasota	04:15	Clear	10	76	76	100	CALM	-	29.91
Brenham	04:15	Clear	10	76	74	94	CALM	-	29.92
Conroe	03:53	Clear	7	74	74	100	CALM	-	29.92
Cleveland	04:15	Clear	7				CALM	-	29.93
Liberty	04:15	Mist	2 1/2	75	75	100	CALM	-	29.89
Columbus	04:15	Clear	10	76	75	97	CALM	-	29.92
Spring	03:53	Mist	6	74	74	100	CALM	-	29.91
Houston Intercontinental Aprt	03:53	Mostly Clear	10	77	77	100	CALM	-	29.91
Katy/Brookshire	04:15	Clear	10	77	77	100	CALM	-	29.92
Texas Medical Center Heliport	04:15	Clear	10	80	77	88	CALM	-	29.90
Sugar Land	03:53	Clear	10	77	76	96	CALM	-	29.90
Houston Hobby Airport	03:53	Mostly Clear	10	79	77	93	SSW 3	-	29.89
Arcola/Sienna	04:15	Clear	10	76	74	94	CALM	-	29.91
Pearland	03:53	Clear	10	79	76	90	CALM	-	29.91
Ellington Field	03:54	Mostly Clear	10	80	77	88	CALM	-	29.89
La Porte	04:15	Clear	10	77	77	100	CALM	-	29.91
Wharton	04:15	Partly Cloudy	10	75	74	94	CALM	-	29.91
Angleton/Lake Jackson	03:53	Clear	10	75	74	96	CALM	-	29.89
Galveston	03:52	Clear	10	83	76	79	S 6	91 [HI]	29.90
Bay City	04:15	Mostly Clear	9	75	75	100	CALM	-	29.86
Palacios	03:53	Partly Cloudy	10	84	78	82	S 7	95 [HI]	29.88
Rig 20 Miles SE of Matagorda	04:20		10	86	80	84	S 13	101 [HI]	29.92

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