NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Wed, May 20, 2026 at 12:30:23 pm CDT

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Heavy Rainfall Risk Through Weekend

Forecast Rainfall Totals

High Risk of Rip Currents

Current radar loop for Houston, TX.

Multiple rounds of showers and thunderstorms containing moderate to heavy rainfall expected through the weekend. Marginal Excessive Rainfall Risk (level 1 of 4) for most of Southeast Texas today into early Thursday. Slight Excessive Rainfall Risk (level 2 of 4) all of Southeast Texas on Thursday. Marginal Excessive Rainfall Risk (level 1 of 4) for all of Southeast on Friday. Slight Excessive Rainfall Risk (level 2 of 4) for all of Southeast Texas on Saturday due to potential additional shower/thunderstorm activity.

Unsettled pattern will lead to continued chances for showers and thunderstorms, with additional rounds of moderate to heavy rainfall. Periods of locally heavy rainfall are expected, through the weekend. Rainfall rates will peak in the 3-4+” per hour range in the heaviest downpours. This rainfall will generate runoff and river responses, especially where we see repeated heavy rainfall over the same locations leading to street flooding and river flooding potential through the weekend.

There is a high risk of rip currents along all Gulf facing beaches through Wednesday evening. Stay away from rocks and swim near a life guard.

Current Weather Observations...

Location	Time (CDT)	Weather	Vsby. (SM)	Temp. (ºF)	Dewpt. (ºF)	Hum. (%)	Wind (mph)	Wind Chill / Heat Index (ºF)	Pres. (in)
Crockett	01:35	Rain \ Mist \ Lightning Observed	3	66	66	100	CALM	-	30.09
Caldwell	12:15	Partly Cloudy	10	75	66	73	CALM	-	30.05
College Station	11:53	Mostly Clear	10	73	67	81	NE 10	-	30.04
Huntsville	11:53	Clear	10	69	65	86	NE 7	-	30.07
Navasota	12:15	Overcast	10	72	72	100	NNE 9	-	30.03
Conroe	12:09	Mostly Cloudy	10	71	68	90	NNW 6	-	30.07
Hooks Airport	11:53	Mostly Cloudy	9	71	69	93	N 9	-	30.04
Intercontinental Airport	11:53	Overcast	10	73	71	93	NNE 14	-	30.01
Houston Hobby Airport	11:53	Overcast	10	76	69	79	SSE 9	-	29.99
Sugar Land	11:53	Clear	10	76	69	79	SE 13G17	-	29.98
Wharton	01:10	Light Rain	5	68	66	93	N 17G24	-	30.08
Pearland	11:53	Partly Cloudy	10	75	68	78	S 6	-	30.02
Ellington Field	11:54	Overcast	10	75	69	83	SE 10	-	29.99
La Porte	12:15	Partly Cloudy	10	76	70	81	SSE 9	-	30.01
Angleton/Lake Jackson	11:53	Partly Cloudy	10	74	70	87	E 8	-	30.00
Galveston	05:52	Thunder In The Vicinity \ Light Rain \ Lightning Observed	10	73	70	90	NNE 10	-	29.99
Bay City	12:15	Partly Cloudy	10	77	76	94	E 14	-	29.95
Palacios	11:53	Clear	10	78	70	76	E 20G26	-	29.97
Rig 20 Miles SE of Galveston	12:15	Mist	5	73	71	94	ESE 6G17	-	30.00
Rig 20 Miles SE of Matagorda	12:20	Clear	10	77	77	100	VRB 5	-	30.02

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