BROWNSVILLE, TX 78521 Weather Forecast & Current Conditions

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78521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
BROWNSVILLE, TX Current Weather
4:53 PM CDT SEP 26, 2026
Few Clouds 93°F
Feels Like:	105°F
Dewpoint:	75°F
Rel. Hum.:	56%
Visibility:	10 miles
Wind:	E at 20 mph, gusts to 26
Pressure:	29.88 inches
Last 72 hours
Local Area Snow Depth
Texas Current Weather
Texas MOS Forecast Weather

Regional Weather Maps

(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

THIS AFTERNOON
Mostly sunny with a slight chance of showers and thunderstorms. Near steady temperature in the mid 90s. East winds 10 to 15 mph with gusts up to 20 mph. Chance of rain 20 percent. Heat index values up to 106.

TONIGHT
Partly cloudy in the evening, then becoming 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
Mostly sunny. Highs in the upper 90s. Southeast 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 106.

SUNDAY NIGHT
Partly cloudy. Lows in the upper 70s. Southeast winds 10 to 15 mph with gusts up to 20 mph, diminishing to around 5 mph after midnight.

MONDAY
Mostly sunny. Highs in the upper 90s. Southeast winds around 5 mph, increasing to east 10 to 15 mph with gusts up to 25 mph in the afternoon. Heat index values up to 106.

MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s.

TUESDAY
Mostly sunny. Highs in the upper 90s. Heat index values up to 110.

TUESDAY NIGHT
Partly cloudy. Lows around 80. Heat index values up to 105 early in the evening.

WEDNESDAY
Mostly sunny and breezy. Highs in the upper 90s. Heat index values up to 115.

WEDNESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers after midnight. Lows around 80. Chance of rain 30 percent. Heat index values up to 110 early in the evening.

THURSDAY
Mostly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 50 percent. Heat index values up to 110.

THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. Lows in the upper 70s. Chance of rain 50 percent. Heat index values up to 105 early in the evening.

FRIDAY
Showers likely. A chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 60 percent.

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 AM CDT 9/26/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
26 SEP 2026

1 PM

93°

105°

Partly Cloudy

19%
RAIN
.1–.25 in

0% Thunder
( 20% severe)

E 12

56%

75°

High 94°

4 PM

92°

103°

Mostly Cloudy

E 13

58%

75°

Partly Cloudy

7 PM

87°

97°

Partly Cloudy

0%

0% Thunder
( 3% severe)

E 10

68%

75°

10 PM

84°

93°

Partly Cloudy

ESE 5

77%

76°

Sunday
27 SEP 2026

1 AM

82°

89°

Clear

1%

0% Thunder
( 3% severe)

CALM

82%

76°

Low 79°

4 AM

81°

87°

Partly Cloudy

CALM

85%

76°

High 98°

7 AM

79°

83°

Partly Cloudy

3%

0% Thunder
( 8% severe)

CALM

91%

76°

Partly Cloudy

10 AM

88°

99°

Partly Cloudy

SE 1

68%

76°

1 PM

93°

102°

Partly Cloudy

17%
RAIN
<.01 in

0% Thunder
( 18% severe)

ESE 7

52%

73°

4 PM

92°

103°

Mostly Cloudy

E 12

58%

75°

7 PM

87°

95°

Partly Cloudy

0%

0% Thunder
( 4% severe)

ESE 10

65%

74°

10 PM

84°

92°

Partly Cloudy

ESE 5

74%

75°

Monday
28 SEP 2026

1 AM

82°

89°

Partly Cloudy

3%

0% Thunder
( 8% severe)

SE 3

79%

75°

Low 79°

4 AM

81°

87°

Partly Cloudy

CALM

82%

75°

High 98°

7 AM

79°

83°

Partly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 15% severe)

CALM

88%

75°

Partly Cloudy

Chance of Rain

10 AM

88°

99°

Partly Cloudy

SE 1

68%

76°

1 PM

93°

102°

Partly Cloudy

29%
RAIN
.1–.25 in

0% Thunder
( 24% severe)

ESE 8

52%

73°

4 PM

92°

102°

Partly Cloudy

ESE 13

56%

74°

7 PM

86°

95°

Partly Cloudy

ESE 12

70%

75°


BROWNSVILLE, TX extended weather forecast
Tuesday 29 SEP 2026	Wednesday 30 SEP 2026	Thursday 1 OCT 2026	Friday 2 OCT 2026	Saturday 3 OCT 2026
Low 78°	Low 81°	Low 80°	Low 78°	Low 72°
High 94°	High 97°	High 95°	High 93°	High 89°

Partly Cloudy 23% Rain	Partly Cloudy 27% Rain	Partly Cloudy 29% Rain	Partly Cloudy 38% Rain	Partly Cloudy 40% Rain

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