NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sat, Sep 5, 2026 at 5:08:20 pm 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	16:15	Lightning Observed	10	91	71	52	CALM	97 [HI]	29.90
College Station	15:53	Clear	10	95	70	44	CALM	102 [HI]	29.87
Caldwell	16:15	Lightning Observed	10	96	66	36	E 9	100 [HI]	29.87
Huntsville	16:22	Thunder \ Lightning Observed	10	82	73	74	ENE 10G26	-	29.91
Navasota	16:35	Mostly Cloudy	10	96	73	47	NW 8	106 [HI]	29.85
Brenham	16:35	Thunder \ Lightning Observed	10	96	69	41	E 5	102 [HI]	29.85
Conroe	16:18	Lightning Observed	10	86	73	65	WSW 7	93 [HI]	29.90
Cleveland	16:35	Thunder \ Lightning Observed	10				CALM	-	29.91
Liberty	16:35	Light Rain \ Lightning Observed	9	78	77	94	NE 10	-	29.89
Columbus	16:35	Partly Cloudy	10	95	71	46	E 3	103 [HI]	29.86
Spring	15:53	Thunder In The Vicinity \ Lightning Observed	10	92	73	54	ESE 7	101 [HI]	29.87
Houston Intercontinental Aprt	16:08	Cumulonimbus Clouds, Lightning Observed	10	88	72	59	WSW 5	95 [HI]	29.88
Katy/Brookshire	16:35	Mostly Clear	10	87	77	70	SE 15	99 [HI]	29.89
Texas Medical Center Heliport	16:35	Lightning Observed	10	91	71	52	SE 8	98 [HI]	29.87
Sugar Land	16:01	Thunder In The Vicinity \ Lightning Observed	10	81	77	87	WNW 6	-	29.88
Houston Hobby Airport	15:53	Cumulonimbus Clouds, Lightning Observed	10	91	73	55	ESE 6	100 [HI]	29.87
Arcola/Sienna	16:35	Clear	10	90	72	55	SE 5	98 [HI]	29.88
Pearland	15:53	Lightning Observed	10	90	71	53	SSE 5	96 [HI]	29.89
Ellington Field	14:54	Mostly Clear	10	87	75	66	ESE 6	96 [HI]	29.88
La Porte	16:35	Partly Cloudy	10	87	75	66	ESE 10	96 [HI]	29.88
Wharton	16:35	Clear	10	92	73	53	SSE 14G18	102 [HI]	29.88
Angleton/Lake Jackson	15:53	Clear	10	92	72	52	S 7	100 [HI]	29.88
Galveston	15:52	Clear	10	88	78	72	SE 10	102 [HI]	29.90
Bay City	16:35	Overcast	10	91	77	62	SSE 10	105 [HI]	29.83
Palacios	15:53	Clear	10	90	77	65	SSE 12	103 [HI]	29.86
Rig 20 Miles SE of Matagorda	16:40		10	87	78	74	VRB 5	100 [HI]	29.92

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