BROWNSVILLE, TX 78521 Weather Forecast & Current Conditions

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BROWNSVILLE, TX
Current Weather

8:53 AM CDT SEP 15, 2026
Clear
88°F
Feels Like: 103°F
Dewpoint: 79°F
Rel. Hum.: 75%
Visibility: 10 miles
Wind: SSE at 14 mph
Pressure: 30.04 inches
Last 72 hours

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BROWNSVILLE, TX 78521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Mostly clear. Near steady temperature in the lower 80s. Southeast winds 5 to 10 mph with gusts up to 25 mph.
TUESDAY
Sunny. Highs in the upper 90s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 110.
TUESDAY NIGHT
Mostly clear. Humid with lows in the upper 70s. Southeast winds 10 to 15 mph with gusts up to 30 mph, diminishing to around 5 mph after midnight.
WEDNESDAY
Sunny with highs in the upper 90s. East winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Heat index values up to 110.
WEDNESDAY NIGHT
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 25 mph in the evening, becoming light and variable. Heat index values up to 105 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. A chance of showers after midnight. Lows in the upper 70s. Chance of rain 40 percent. Heat index values up to 105 early in the evening.
FRIDAY
Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 50 percent. Heat index values up to 110.
FRIDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s.
SATURDAY
Sunny. Highs in the mid 90s. Heat index values up to 110.
SATURDAY NIGHT
Mostly clear. Lows in the upper 70s.
SUNDAY
Sunny. Highs in the upper 90s. Heat index values up to 110.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s.

Visible Weather Satellite
BROWNSVILLE, TX 78521
Infrared Weather Satellite
BROWNSVILLE, TX 78521
NEXRAD Weather Radar
BROWNSVILLE, TX 78521

BROWNSVILLE, TX 3 hourly weather forecast

weather forecast created  7:00 PM CDT  9/14/2026
Tuesday
15 SEP 2026
BROWNSVILLE, TX 78521 weather forecast Day 1, 0 hours 1 AM 84° 94° Partly Cloudy 1%

0% Thunder
( 3% severe)
SSE   10 80% 77°
Low 80° BROWNSVILLE, TX 78521 weather forecast Day 1, 3 hours 4 AM 82° 90° Clear SSE   9 85% 77°
High 100° BROWNSVILLE, TX 78521 weather forecast Day 1, 6 hours 7 AM 81° 87° Clear 1%

0% Thunder
( 9% severe)
SSE   8 85% 76°

Clear



BROWNSVILLE, TX 78521 weather forecast Day 1, 9 hours 10 AM 90° 101° Clear SSE   13 62% 75°
BROWNSVILLE, TX 78521 weather forecast Day 1, 12 hours 1 PM 96° 105° Clear 1%

0% Thunder
( 14% severe)
SSE   16 46% 72°
BROWNSVILLE, TX 78521 weather forecast Day 1, 15 hours 4 PM 95° 105° Clear SE   17 49% 73°
BROWNSVILLE, TX 78521 weather forecast Day 1, 18 hours 7 PM 88° 98° Clear 1%

0% Thunder
( 4% severe)
SE   15 66% 75°
BROWNSVILLE, TX 78521 weather forecast Day 1, 21 hours 10 PM 85° 96° Clear SE   9 77% 77°
Wednesday
16 SEP 2026
BROWNSVILLE, TX 78521 weather forecast Day 2, 0 hours 1 AM 83° 92° Partly Cloudy 4%

0% Thunder
( 9% severe)
SSE   6 82% 77°
Low 80° BROWNSVILLE, TX 78521 weather forecast Day 2, 3 hours 4 AM 81° 88° Partly Cloudy SE   3 88% 77°
High 99° BROWNSVILLE, TX 78521 weather forecast Day 2, 6 hours 7 AM 80° 85° Partly Cloudy 7%

0% Thunder
( 21% severe)
  CALM 88% 76°

Partly Cloudy



BROWNSVILLE, TX 78521 weather forecast Day 2, 9 hours 10 AM 89° 101° Partly Cloudy ESE   5 66% 76°
BROWNSVILLE, TX 78521 weather forecast Day 2, 12 hours 1 PM 94° 105° Mostly Cloudy 9%

0% Thunder
( 30% severe)
E   12 53% 74°
BROWNSVILLE, TX 78521 weather forecast Day 2, 15 hours 4 PM 94° 105° Clear E   15 53% 74°
BROWNSVILLE, TX 78521 weather forecast Day 2, 18 hours 7 PM 88° 98° Partly Cloudy 3%

0% Thunder
( 14% severe)
E   12 66% 75°
BROWNSVILLE, TX 78521 weather forecast Day 2, 21 hours 10 PM 85° 96° Partly Cloudy E   5 77% 77°

BROWNSVILLE, TX extended weather forecast

Thursday
17 SEP 2026
Friday
18 SEP 2026
Saturday
19 SEP 2026
Sunday
20 SEP 2026
Monday
21 SEP 2026
Low 78° Low 77° Low 76° Low 77° Low 75°
High 94° High 94° High 95° High 94° High 95°
BROWNSVILLE, TX 78521 weather forecast Day 3 BROWNSVILLE, TX 78521 weather forecast Day 4 BROWNSVILLE, TX 78521 weather forecast Day 5 BROWNSVILLE, TX 78521 weather forecast Day 6 BROWNSVILLE, TX 78521 weather forecast Day 7
Partly Cloudy
44% Rain
Partly Cloudy
31% Rain
Partly Cloudy
21% Rain
Partly Cloudy
20% Rain
Clear
15% Rain
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