NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sat, Oct 3, 2026 at 8:46:59 pm CDT

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Locally Heavy Rainfall Possible

Tonight

Tomorrow

Extended Outlook

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Periods of moderate to heavy rain and isolated thunderstorms will continue through Sunday. The main timeframe of concern for moderate to heavy rainfall today, tonight and Sunday. The highest risk for heavy downpours is along and south of I-10, as well as along the coast. Fast-moving storms could drop intense rainfall rates of 2 to 3+ inches per hour. An additional 1 to 3 inches is expected, mainly in coastal counties with locally higher amounts possible.

Rain and isolated storms will linger through late evening, primarily south of I-10. Watch for localized flash flooding in areas that see heavy downpours. Activity lightens up after midnight, pushing mostly over the coastal waters.

Tomorrow’s Outlook: Mostly Cloudy with Some Showers/T-Storms. Highs: 79–84°F. Showers and isolated thunderstorms expected, mainly south of I-10 and along the coast. Highest rain chances occur late this afternoon through the evening. Stay weather aware and ensure you have multiple ways to receive alerts.

High rain chances will continue across SE TX through the weekend as deep moisture remains in place and a slow moving front crosses the region. Slightly cooler and drier weather are expected early to mid next week behind the front.

Current Weather Observations...

Location	Time (CDT)	Weather	Vsby. (SM)	Temp. (ºF)	Dewpt. (ºF)	Hum. (%)	Wind (mph)	Wind Chill / Heat Index (ºF)	Pres. (in)
Bryan	19:55	Mostly Cloudy	10	76	72	88	NE 7	-	30.01
College Station	20:02	Mostly Cloudy	10	76	72	87	NE 8	-	29.98
Caldwell	19:55	Mostly Cloudy	10	77	71	83	NNE 7	-	30.00
Huntsville	20:15	Overcast	9	76	73	90	N 8	-	29.99
Navasota	20:15	Mostly Cloudy	9	76	76	100	NNE 12	-	29.96
Brenham	20:15	Lightning Observed	10	77	72	86	NNE 10	-	29.97
Conroe	19:53	Clear	10	77	76	96	N 7	-	29.95
Cleveland	20:15	Lightning Observed	10	79	74	85	N 6	-	29.96
Liberty	20:15	Heavy Rain \ Mist \ Lightning Observed	1/2	78	77	94	E 7G22	-	29.93
Columbus	20:15	Rain With Thunder In The Vicinity \ Lightning Observed	10	76	75	95	NNE 5	-	29.97
Spring	19:53	Partly Cloudy	9	79	75	87	N 7	-	29.94
Houston Intercontinental Aprt	19:53	Mostly Cloudy	10	82	76	81	N 14	-	29.92
Katy/Brookshire	20:15	Overcast	7	77	77	100	N 10	-	29.95
Texas Medical Center Heliport	20:15	Thunder In The Vicinity \ Lightning Observed	10	84	75	74	N 12G17	92 [HI]	29.91
Sugar Land	20:04	Mostly Clear	10	80	76	87	N 10	-	29.91
Houston Hobby Airport	19:53	Mostly Cloudy	10	86	74	67	NE 10	94 [HI]	29.90
Arcola/Sienna	20:15	Lightning Observed	10	85	72	65	NNE 6	91 [HI]	29.92
Pearland	19:53	Mostly Cloudy	10	85	73	67	NE 7	92 [HI]	29.91
Ellington Field	17:54	Mostly Cloudy	10	86	73	66	NE 12	93 [HI]	29.87
La Porte	20:15	Lightning Observed	10	84	75	74	NNE 8	92 [HI]	29.91
Wharton	20:15	Mostly Cloudy	10	80	74	83	N 13	-	29.93
Galveston	07:46	Mostly Clear	10	82	73	74	SE 8	-	29.90
Bay City	20:15	Mostly Clear	10				NNE 6	-	29.86
Palacios	19:53	Clear	10	82	76	81		-	29.88
Rig 20 Miles SE of Galveston	20:20	Haze	5	80	77	88		-	29.90
Rig 20 Miles SE of Matagorda	20:15	Mostly Cloudy	10	80	78	94	NE 22	-	29.91

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