NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sat, Sep 5, 2026 at 10:30:10 pm CDT

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Saturday Night

Sunday

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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.

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

The weather outlook for Sunday anticipates high temperatures to reach 92-96 degrees Fahrenheit inland and 91-92 degrees Fahrenheit at the beaches. Conditions will feature scattered showers and thunderstorms primarily south of I-10, with light south-southeasterly winds expected outside of any storm activity.

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	21:55	Clear	10	79	74	86	SE 6	-	29.93
College Station	21:53	Clear	10	80	74	81	SE 8	-	29.91
Caldwell	21:55	Clear	10	80	71	74	E 3	-	29.93
Huntsville	21:53	Clear	10	78	75	90	SE 5	-	29.91
Navasota	22:15	Overcast	10	77	77	100	SE 3	-	29.89
Brenham	22:15	Clear	10	78	72	81	CALM	-	29.91
Conroe	21:53	Clear	10	76	75	97	CALM	-	29.91
Cleveland	22:15	Clear	7				CALM	-	29.91
Liberty	22:15	Mist	6	75	75	100	CALM	-	29.89
Columbus	22:15	Clear	10	83	76	80	CALM	91 [HI]	29.91
Spring	21:53	Clear	10	78	74	87	E 3	-	29.90
Houston Intercontinental Aprt	21:53	Partly Cloudy	10	78	76	93	ESE 6	-	29.90
Katy/Brookshire	22:15	Clear	10	82	77	83	SSE 6	-	29.92
Texas Medical Center Heliport	22:15	Mostly Cloudy	10	82	77	83	SE 9	-	29.89
Sugar Land	21:53	Clear	10	83	76	79	SSE 7	91 [HI]	29.89
Houston Hobby Airport	21:53	Partly Cloudy	10	83	78	85	ESE 7	93 [HI]	29.89
Arcola/Sienna	22:15	Clear	10	81	77	87	CALM	-	29.91
Pearland	21:53	Clear	10	82	76	81	CALM	-	29.91
Ellington Field	21:54	Mostly Clear	10	80	78	94	CALM	-	29.89
La Porte	22:15	Clear	10	80	77	88	E 7	-	29.91
Wharton	22:15	Clear	10	80	76	88	SSE 5	-	29.92
Angleton/Lake Jackson	21:53	Clear	10	79	76	90	CALM	-	29.90
Galveston	21:52	Partly Cloudy	10	84	76	76	SE 5	93 [HI]	29.91
Bay City	22:15	Clear	10	80	80	97	CALM	-	29.87
Palacios	21:53	Clear	10	84	79	84	SSE 7	96 [HI]	29.89
Rig 20 Miles SE of Matagorda	22:20		10	84	80	88	SE 9	97 [HI]	29.94

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