NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sat, Oct 3, 2026 at 5:50:12 am CDT

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Locally Heavy Rainfall Possible

Today

Tonight

Additional Rainfall Totals

Extended Outlook

Current radar

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.

Showers with isolated thunderstorms can be expected today, with the best chances for areas along and south of the I-10 corridor. Heavy rainfall may cause localized flash flooding. Highest rain chances occur late this afternoon through the evening. Stay weather aware and ensure you have multiple ways to receive alerts.

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.

Additional rainfall totals: less than 1.0” except where localized stronger storms occur expected today. Saturday through Monday, highest rainfall totals can be expected along and south of the I-10 corridor. 2-4” of rainfall spread out across several days. Most of the rainfall will occur late Saturday into Sunday.

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	05:15	Overcast	10	75	73	93	N 7	-	29.98
College Station	05:06	Mostly Clear	10	75	73	93	NNE 8	-	29.94
Caldwell	05:15	Overcast	10	75	71	88	N 7	-	29.97
Huntsville	05:11	Mostly Clear	9	74	73	97	N 6	-	29.95
Navasota	05:35	Overcast	10	75	75	100	N 3	-	29.93
Brenham	05:35	Partly Cloudy	10	74	72	93	N 3	-	29.94
Conroe	04:53	Mostly Clear	10	75	74	96	N 6	-	29.93
Cleveland	05:35	Clear	10	74	73	97	CALM	-	29.93
Liberty	05:35	Clear	9	73	73	100	NNE 5	-	29.90
Columbus	05:35	Clear	10	75	74	97	CALM	-	29.93
Spring	04:53	Clear	7	75	74	96	NNE 5	-	29.91
Houston Intercontinental Aprt	04:53	Mostly Clear	10	75	74	96	NNE 6	-	29.90
Katy/Brookshire	05:35	Mist	4	75	75	100	N 5	-	29.93
Texas Medical Center Heliport	05:35	Mostly Clear	10	75	73	94	NE 9	-	29.89
Sugar Land	04:53	Clear	10	74	73	97	N 6	-	29.90
Houston Hobby Airport	04:53	Mostly Clear	10	76	73	90	NNE 6	-	29.89
Arcola/Sienna	05:35	Mostly Cloudy	10	76	75	95	N 6	-	29.91
Pearland	04:53	Clear	10	77	74	90	N 3	-	29.90
Ellington Field	04:54	Clear	10	77	73	88	N 6	-	29.88
La Porte	05:35	Clear	10	78	75	88	NE 8	-	29.90
Wharton	05:35	Overcast	10	75	73	92	NNE 8	-	29.91
Galveston	07:46	Mostly Clear	10	82	73	74	SE 8	-	29.90
Bay City	05:35	Mostly Cloudy	10				NNE 7	-	29.85
Palacios	04:53	Mostly Clear	7	76	75	97	N 9	-	29.88
Rig 20 Miles SE of Galveston	05:20	Overcast	8	80	77	88	NE 30	-	29.88
Rig 20 Miles SE of Matagorda	05:35	Mostly Cloudy	10	82	80	94	NNE 12G18	93 [HI]	29.89

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