NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Fri, Oct 2, 2026 at 4:02:31 am CDT

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Excessive Rainfall Outlook

Rainfall Totals: Through Friday

Rainfall Totals: Saturday through Sunday

Extended Outlook

Current radar

Scattered to numerous showers and thunderstorms will result in the threat of heavy rainfall through Friday. Rainfall rates of 2 to 4 inches per hour will be possible in the heaviest storms.

Locally heavy rainfall could result in minor flooding. The greatest risk of flooding through Friday will remain over the far western counties including the Brazos Valley. The threat for heavy rainfall will shift south and east this weekend as a weak cold front moves slowly across the area.

This graphic shows the most likely and reasonable high end rainfall totals through Friday. The heaviest showers and thunderstorms are expected over the northern and western portions of southeast Texas, particularly over the Brazos Valley.

Scattered to numerous showers and thunderstorms are expected through the weekend as a slow moving cold front interacts with deep moisture over the area. The heaviest rainfall totals this weekend are expected over the coastal counties.

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	03:15	Partly Cloudy	10	73	72	97	SE 9	-	29.92
College Station	02:53	Light Rain	10	74	72	93	ESE 6	-	29.90
Caldwell	03:15	Mostly Cloudy	10	73	71	94	CALM	-	29.92
Huntsville	02:53	Partly Cloudy	10	74	73	97	ESE 7	-	29.93
Navasota	03:35	Light Rain	8	74	74	100	SE 8	-	29.89
Brenham	03:35	Light Rain	10	73	72	98	ESE 6	-	29.90
Conroe	02:53	Light Rain	10	73	73	100	WSW 3	-	29.92
Cleveland	03:35	Heavy Rain	1 3/4	74	73	97	CALM	-	29.93
Liberty	03:35	Mist	5	75	75	100	W 3	-	29.89
Columbus	03:35	Light Rain	10	73	73	97	CALM	-	29.90
Spring	02:53	Light Rain	7	74	73	97	NNW 3	-	29.91
Houston Intercontinental Aprt	03:17	Light Rain \ Mist	3	75	73	93	WNW 5	-	29.90
Katy/Brookshire	03:35	Overcast	8	75	75	100	SE 5	-	29.91
Texas Medical Center Heliport	03:35	Fog	1/4	75	75	100	CALM	-	29.91
Sugar Land	03:06	Light Rain	10	75	75	100	NNW 8	-	29.90
Houston Hobby Airport	03:33	Light Rain \ Mist	4	76	74	93	VRB 5	-	29.89
Arcola/Sienna	03:35	Overcast	10	77	75	95	NW 5	-	29.91
Pearland	03:34	Mostly Cloudy	10	78	75	90	WNW 3	-	29.90
Ellington Field	02:54	Partly Cloudy	10	78	75	88	NNW 8	-	29.87
La Porte	03:15	Mostly Cloudy	10	78	75	88	WNW 7	-	29.89
Wharton	03:35	Rain	7	74	73	97	ENE 8	-	29.90
Galveston	07:46	Mostly Clear	10	82	73	74	SE 8	-	29.90
Bay City	03:35	Mostly Clear	10				N 7	-	29.85
Palacios	03:29	Heavy Rain \ Mist	1 1/4	74	73	97	N 7	-	29.90
Rig 20 Miles SE of Galveston	03:35	Partly Cloudy	10	84	77	79	SE 13	94 [HI]	29.89
Rig 20 Miles SE of Matagorda	03:35	Partly Cloudy	10	84	78	83	VRB 7	95 [HI]	29.90

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