NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sat, Sep 5, 2026 at 9:14:24 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	20:35	Clear	10	81	73	78	ESE 3	-	29.90
College Station	20:53	Clear	10	81	73	76	E 7	-	29.88
Caldwell	20:35	Clear	10	82	69	65	E 6	-	29.89
Huntsville	20:53	Clear	10	78	75	90	E 3	-	29.90
Navasota	20:55	Clear	10	77	77	100	CALM	-	29.87
Brenham	20:55	Clear	10	79	72	78	ESE 3	-	29.87
Conroe	20:53	Clear	10	77	75	93	E 3	-	29.90
Cleveland	20:55	Clear	10				CALM	-	29.90
Liberty	20:55	Clear	7	75	75	100	CALM	-	29.88
Columbus	20:55	Clear	10	85	75	72	E 3	94 [HI]	29.88
Spring	20:53	Clear	10	79	75	87	E 6	-	29.89
Houston Intercontinental Aprt	20:53	Mostly Cloudy	10	79	75	87	ESE 8	-	29.88
Katy/Brookshire	20:55	Clear	10	82	75	78	CALM	-	29.89
Texas Medical Center Heliport	20:55	Overcast	10	84	77	79	VRB 7	94 [HI]	29.87
Sugar Land	20:53	Clear	10	84	76	76	SE 8	93 [HI]	29.87
Houston Hobby Airport	20:53	Partly Cloudy	10	84	77	79	SE 7	94 [HI]	29.87
Arcola/Sienna	20:55	Clear	10	82	76	81	CALM	-	29.89
Pearland	20:53	Clear	10	83	76	79	CALM	91 [HI]	29.89
Ellington Field	20:54	Mostly Clear	10	80	78	94	NE 5	-	29.86
La Porte	20:55	Clear	10	80	77	88	E 5	-	29.89
Wharton	20:55	Clear	10	82	76	82	SE 5	-	29.88
Angleton/Lake Jackson	20:53	Clear	10	82	76	81	ESE 3	-	29.87
Galveston	20:52	Clear	10	83	76	79	SE 6	91 [HI]	29.88
Bay City	20:55	Clear	10	81	80	94	ESE 5	91 [HI]	29.83
Palacios	20:53	Clear	10	84	78	82	SSE 8	95 [HI]	29.86
Rig 20 Miles SE of Matagorda	21:00		10	84	78	83	SE 7	95 [HI]	29.92

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