BROWNSVILLE, TX 78521 Weather Forecast & Current Conditions

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78521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
BROWNSVILLE, TX Current Weather
9:53 AM CDT SEP 18, 2026
Broken Clouds 91°F
Feels Like:	108°F
Dewpoint:	79°F
Rel. Hum.:	68%
Visibility:	10 miles
Wind:	NNW at 3 mph
Pressure:	30.05 inches
Last 72 hours
Local Area Snow Depth
Texas Current Weather
Texas MOS Forecast Weather

Weather Map

(Automated weather data from NWS/FAA)

78521 WEATHER FORECAST
10-Day model forecast maps 2026 Hurricanes	BROWNSVILLE, TX 78521 Weather Forecast	Snowfall Forecast pages Snow Depth pages

REST OF TONIGHT
Mostly clear with a slight chance of showers and thunderstorms. Near steady temperature in the lower 80s. Light and variable winds. Chance of rain 20 percent.

FRIDAY
Mostly sunny with a slight chance of showers and thunderstorms. Humid with highs in the mid 90s. Northeast winds around 5 mph, increasing to east 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of rain 20 percent. Heat index values up to 109.

FRIDAY NIGHT
Mostly clear. Humid with lows in the upper 70s. East winds 10 to 15 mph with gusts up to 20 mph in the evening, becoming light and variable.

SATURDAY
Sunny with highs in the mid 90s. North winds around 5 mph, increasing to east 10 to 15 mph with gusts up to 20 mph in the afternoon. Heat index values up to 107.

SATURDAY NIGHT
Mostly clear. Humid with lows in the upper 70s. East winds 10 to 15 mph with gusts up to 20 mph in the evening, becoming light and variable.

SUNDAY
Sunny. Highs in the upper 90s. Heat index values up to 110.

SUNDAY NIGHT
Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.

MONDAY
Sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 30 percent. Heat index values up to 110.

MONDAY NIGHT
Mostly clear. Lows in the upper 70s.

TUESDAY
Sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 40 percent. Heat index values up to 110.

TUESDAY NIGHT
Mostly clear. Lows in the upper 70s.

WEDNESDAY
Sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40 percent. Heat index values up to 110.

WEDNESDAY NIGHT
Mostly clear. Lows in the upper 70s.

78521 WEATHER SATELLITE LOOPS

Visible Weather Satellite
BROWNSVILLE, TX 78521

Infrared Weather Satellite
BROWNSVILLE, TX 78521

78521 WEATHER RADAR LOOP

NEXRAD Weather Radar
BROWNSVILLE, TX 78521

MOS COMPUTER WEATHER FORECAST

BROWNSVILLE, TX 3 hourly weather forecast

weather forecast created 7:00 PM CDT 9/17/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
18 SEP 2026

1 AM

82°

91°

Partly Cloudy

33%
RAIN
.1–.25 in

0% Thunder
( 21% severe)

E 1

88%

78°

Low 78°

4 AM

81°

89°

Partly Cloudy

CALM

91%

78°

High 97°

7 AM

79°

83°

Partly Cloudy

31%
RAIN
.5–1 in

0% Thunder
( 26% severe)

N 2

94%

77°

Partly Cloudy

Chance of Rain

10 AM

86°

97°

Partly Cloudy

ENE 1

75%

77°

1 PM

92°

103°

Partly Cloudy

8%

0% Thunder
( 35% severe)

ENE 9

58%

75°

4 PM

93°

105°

Partly Cloudy

ENE 13

56%

75°

7 PM

87°

98°

Partly Cloudy

1%

0% Thunder
( 7% severe)

E 9

70%

76°

10 PM

84°

93°

Clear

E 1

77%

76°

Saturday
19 SEP 2026

1 AM

82°

89°

Clear

5%

0% Thunder
( 13% severe)

CALM

82%

76°

Low 78°

4 AM

80°

85°

Clear

CALM

88%

76°

High 97°

7 AM

78°

81°

Partly Cloudy

5%

0% Thunder
( 16% severe)

CALM

91%

75°

Partly Cloudy

10 AM

86°

95°

Clear

CALM

70%

75°

1 PM

93°

103°

Partly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 27% severe)

ENE 8

54%

74°

4 PM

92°

102°

Partly Cloudy

E 12

56%

74°

7 PM

87°

97°

Clear

0%

0% Thunder
( 9% severe)

E 10

68%

75°

10 PM

83°

91°

Clear

ESE 3

80%

76°


BROWNSVILLE, TX extended weather forecast
Sunday 20 SEP 2026	Monday 21 SEP 2026	Tuesday 22 SEP 2026	Wednesday 23 SEP 2026	Thursday 24 SEP 2026
Low 77°	Low 76°	Low 77°	Low 77°	Low 76°
High 96°	High 95°	High 95°	High 94°	High 92°

Clear 16% Rain	Clear 18% Rain	Partly Cloudy 25% Rain	Partly Cloudy 30% Rain	Partly Cloudy 30% Rain

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