BROWNSVILLE, TX 78521 Weather Forecast & Current Conditions

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BROWNSVILLE, TX
Current Weather

3:53 PM CDT AUG 17, 2026
Scattered Clouds
97°F
Feels Like: 110°F
Dewpoint: 75°F
Rel. Hum.: 50%
Visibility: 10 miles
Wind: SSE at 20 mph, gusts to 25
Pressure: 30.02 inches
Last 72 hours

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BROWNSVILLE, TX 78521
Weather Forecast

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THIS AFTERNOON
Sunny with a slight chance of showers and thunderstorms. Near steady temperature in the mid 90s. Southeast winds 10 to 15 mph with gusts up to 20 mph. Chance of rain 20 percent. Heat index values up to 109.
TONIGHT
Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the upper 70s. Southeast winds 10 to 15 mph with gusts up to 20 mph, diminishing to around 5 mph after midnight. Chance of rain 20 percent. Heat index values up to 105 early in the evening.
TUESDAY
Sunny. Highs in the upper 90s. Southeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Heat index values up to 108.
TUESDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
WEDNESDAY
Mostly sunny. Humid with highs in the upper 90s. Southeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Heat index values up to 111.
WEDNESDAY NIGHT
Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.
THURSDAY
Sunny. Highs in the upper 90s. Heat index values up to 110.
THURSDAY NIGHT
Mostly clear. Lows around 80. Heat index values up to 105 early in the evening.
FRIDAY
Mostly sunny. Highs in the upper 90s. Heat index values up to 110.
FRIDAY NIGHT
Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening.
SATURDAY
Sunny, hot with highs around 100. Heat index values up to 110.
SATURDAY NIGHT
Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.
SUNDAY
Sunny, hot with highs around 100. Heat index values up to 110.

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 AM CDT  8/17/2026
Monday
17 AUG 2026
BROWNSVILLE, TX 78521 weather forecast Day 1, 12 hours 1 PM 93° 105° Partly Cloudy 8%

0% Thunder
( 28% severe)
SE   12 56% 75°
High 95° BROWNSVILLE, TX 78521 weather forecast Day 1, 15 hours 4 PM 94° 105° Partly Cloudy SE   14 53% 74°
Partly Cloudy



BROWNSVILLE, TX 78521 weather forecast Day 1, 18 hours 7 PM 89° 98° Partly Cloudy 1%

0% Thunder
( 3% severe)
SE   12 61% 74°
BROWNSVILLE, TX 78521 weather forecast Day 1, 21 hours 10 PM 84° 93° Partly Cloudy SSE   8 77% 76°
Tuesday
18 AUG 2026
BROWNSVILLE, TX 78521 weather forecast Day 2, 0 hours 1 AM 83° 92° Partly Cloudy 3%

0% Thunder
( 5% severe)
SSE   6 82% 77°
Low 80° BROWNSVILLE, TX 78521 weather forecast Day 2, 3 hours 4 AM 81° 88° Clear SSE   6 88% 77°
High 99° BROWNSVILLE, TX 78521 weather forecast Day 2, 6 hours 7 AM 80° 85° Partly Cloudy 3%

0% Thunder
( 8% severe)
SSE   5 88% 76°

Partly Cloudy



BROWNSVILLE, TX 78521 weather forecast Day 2, 9 hours 10 AM 88° 98° Partly Cloudy SSE   8 66% 75°
BROWNSVILLE, TX 78521 weather forecast Day 2, 12 hours 1 PM 95° 104° Clear 2%

0% Thunder
( 12% severe)
SSE   13 48% 72°
BROWNSVILLE, TX 78521 weather forecast Day 2, 15 hours 4 PM 95° 103° Clear SE   15 46% 71°
BROWNSVILLE, TX 78521 weather forecast Day 2, 18 hours 7 PM 89° 97° Clear 0%

0% Thunder
( 2% severe)
SE   13 59% 73°
BROWNSVILLE, TX 78521 weather forecast Day 2, 21 hours 10 PM 84° 92° Partly Cloudy SE   8 74% 75°
Wednesday
19 AUG 2026
BROWNSVILLE, TX 78521 weather forecast Day 3, 0 hours 1 AM 82° 89° Partly Cloudy 1%

0% Thunder
( 4% severe)
SSE   7 82% 76°
Low 80° BROWNSVILLE, TX 78521 weather forecast Day 3, 3 hours 4 AM 81° 87° Partly Cloudy SSE   6 85% 76°
High 99° BROWNSVILLE, TX 78521 weather forecast Day 3, 6 hours 7 AM 80° 85° Mostly Cloudy 2%

0% Thunder
( 12% severe)
SE   5 88% 76°

Partly Cloudy



BROWNSVILLE, TX 78521 weather forecast Day 3, 9 hours 10 AM 88° 98° Partly Cloudy SSE   9 66% 75°
BROWNSVILLE, TX 78521 weather forecast Day 3, 15 hours 1 PM 94° 104° Partly Cloudy 1%

0% Thunder
( 16% severe)
SSE   14 51% 73°
BROWNSVILLE, TX 78521 weather forecast Day 3, 18 hours 4 PM 95° 105° Partly Cloudy SE   16 49% 73°
BROWNSVILLE, TX 78521 weather forecast Day 3, 21 hours 7 PM 89° 99° Partly Cloudy     SE   15 64% 75°

BROWNSVILLE, TX extended weather forecast

Thursday
20 AUG 2026
Friday
21 AUG 2026
Saturday
22 AUG 2026
Sunday
23 AUG 2026
Monday
24 AUG 2026
Low 81° Low 79° Low 78° Low 77° Low 79°
High 98° High 97° High 98° High 97° High 97°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
18% Rain
Clear
16% Rain
Clear
13% Rain
Clear
14% Rain
Partly Cloudy
22% Rain
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