BROWNSVILLE, TX 78521 Weather Forecast & Current Conditions

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78521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
BROWNSVILLE, TX Current Weather
12:53 PM CDT SEP 20, 2026
Clear 99°F
Feels Like:	106°F
Dewpoint:	70°F
Rel. Hum.:	39%
Visibility:	10 miles
Wind:	Variable at 6 mph
Pressure:	29.89 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. Near steady temperature in the mid 90s. East winds 10 to 15 mph with gusts up to 20 mph. Heat index values up to 108.

TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. East winds 10 to 15 mph with gusts up to 20 mph, becoming southeast around 5 mph after midnight. Heat index values up to 105 early in the evening.

MONDAY
Sunny with highs in the upper 90s. East winds around 5 mph, increasing to 10 to 15 mph with gusts up to 20 mph in the afternoon. Heat index values up to 109.

MONDAY NIGHT
Clear with lows in the upper 70s. East winds 10 to 15 mph with gusts up to 20 mph, diminishing to around 5 mph after midnight.

TUESDAY
Sunny with a chance of showers. A chance of thunderstorms in the afternoon. Humid with highs in the mid 90s. East winds around 5 mph, increasing to 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of rain 40 percent. Heat index values up to 107.

TUESDAY NIGHT
Clear. Lows in the upper 70s.

WEDNESDAY
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.

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

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
Mostly clear. Lows in the upper 70s.

FRIDAY
Mostly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40 percent. Heat index values up to 105.

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

SATURDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 30 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 9/20/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
20 SEP 2026

1 PM

95°

105°

Partly Cloudy

7%

0% Thunder
( 24% severe)

E 3

49%

73°

High 96°

4 PM

94°

105°

Partly Cloudy

E 13

53%

74°

Partly Cloudy

7 PM

88°

98°

Partly Cloudy

1%

0% Thunder
( 4% severe)

E 10

66%

75°

10 PM

84°

94°

Partly Cloudy

ESE 6

80%

77°

Monday
21 SEP 2026

1 AM

83°

92°

Partly Cloudy

5%

0% Thunder
( 11% severe)

ESE 3

82%

77°

Low 80°

4 AM

81°

88°

Partly Cloudy

CALM

88%

77°

High 98°

7 AM

80°

86°

Partly Cloudy

6%

0% Thunder
( 16% severe)

CALM

91%

77°

Partly Cloudy

10 AM

88°

99°

Partly Cloudy

CALM

68%

76°

1 PM

94°

105°

Partly Cloudy

14%
RAIN
.1–.25 in

0% Thunder
( 25% severe)

E 9

53%

74°

4 PM

93°

105°

Clear

E 13

56%

75°

7 PM

87°

97°

Clear

0%

0% Thunder
( 7% severe)

E 12

68%

75°

10 PM

84°

94°

Clear

E 6

80%

77°

Tuesday
22 SEP 2026

1 AM

83°

91°

Clear

4%

0% Thunder
( 10% severe)

ESE 2

80%

76°

Low 80°

4 AM

81°

88°

Clear

CALM

88%

77°

High 97°

7 AM

80°

85°

Clear

14%
RAIN
<.01 in

0% Thunder
( 18% severe)

CALM

88%

76°

Partly Cloudy

Chance of Rain

10 AM

88°

99°

Partly Cloudy

E 5

68%

76°

1 PM

93°

103°

Partly Cloudy

24%
RAIN
.1–.25 in

0% Thunder
( 33% severe)

E 12

54%

74°

4 PM

92°

102°

Partly Cloudy

E 15

56%

74°

7 PM

87°

97°

Clear

E 12

68%

75°


BROWNSVILLE, TX extended weather forecast
Wednesday 23 SEP 2026	Thursday 24 SEP 2026	Friday 25 SEP 2026	Saturday 26 SEP 2026	Sunday 27 SEP 2026
Low 77°	Low 77°	Low 77°	Low 76°	Low 77°
High 94°	High 94°	High 94°	High 93°	High 93°

Partly Cloudy 29% Rain	Partly Cloudy 36% Rain	Partly Cloudy 43% Rain	Partly Cloudy 28% Rain	Partly Cloudy 30% Rain

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