MCALLEN, TX 78503 Weather Forecast & Current Conditions

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MCALLEN, TX
Current Weather

11:53 PM CDT AUG 18, 2026
Clear
82°F
Feels Like: 87°F
Dewpoint: 73°F
Rel. Hum.: 74%
Visibility: 10 miles
Wind: SE at 10 mph
Pressure: 30.01 inches
Last 72 hours

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MCALLEN, TX 78503
Weather Forecast

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REST OF TONIGHT
Partly cloudy. Near steady temperature in the upper 70s. Southeast winds 5 to 10 mph with gusts up to 20 mph.
WEDNESDAY
Mostly sunny. Hot with highs around 100. Southeast winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 109.
WEDNESDAY 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. Heat index values up to 106 early in the evening.
THURSDAY
Sunny, hot with highs around 101. Southeast winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 110.
THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Humid with lows around 80. Southeast winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 107 early in the evening.
FRIDAY
Mostly sunny. Hot with highs around 100. Heat index values up to 110.
FRIDAY NIGHT
Partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening.
SATURDAY
Mostly sunny. Hot with highs around 100.
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.
SUNDAY NIGHT
Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.
MONDAY
Sunny, hot with highs around 100. Heat index values up to 105.
MONDAY NIGHT
Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.

Visible Weather Satellite
MCALLEN, TX 78503
Infrared Weather Satellite
MCALLEN, TX 78503
NEXRAD Weather Radar
MCALLEN, TX 78503

MCALLEN, TX 3 hourly weather forecast

weather forecast created  8:00 PM EDT  8/18/2026
Wednesday
19 AUG 2026
MCALLEN, TX 78503 weather forecast Day 1, 0 hours 1 AM 82° 89° Partly Cloudy 0%

0% Thunder
( 1% severe)
SSE   12 79% 75°
Low 78° MCALLEN, TX 78503 weather forecast Day 1, 3 hours 4 AM 80° 85° Mostly Cloudy SE   9 88% 76°
High 102° MCALLEN, TX 78503 weather forecast Day 1, 6 hours 7 AM 79° 83° Partly Cloudy 0%

0% Thunder
( 3% severe)
SE   9 91% 76°

Partly Cloudy



MCALLEN, TX 78503 weather forecast Day 1, 9 hours 10 AM 88° 99° Partly Cloudy SSE   13 68% 76°
MCALLEN, TX 78503 weather forecast Day 1, 12 hours 1 PM 98° 107° Clear 1%

0% Thunder
( 15% severe)
SSE   15 43% 72°
MCALLEN, TX 78503 weather forecast Day 1, 15 hours 4 PM 100° 108° Partly Cloudy SE   16 38% 70°
MCALLEN, TX 78503 weather forecast Day 1, 18 hours 7 PM 95° 102° Clear 0%

0% Thunder
( 3% severe)
SE   18 45% 70°
MCALLEN, TX 78503 weather forecast Day 1, 21 hours 10 PM 86° 95° Partly Cloudy SSE   16 70% 75°
Thursday
20 AUG 2026
MCALLEN, TX 78503 weather forecast Day 2, 0 hours 1 AM 83° 92° Partly Cloudy 1%

0% Thunder
( 2% severe)
SSE   14 82% 77°
Low 81° MCALLEN, TX 78503 weather forecast Day 2, 3 hours 4 AM 82° 90° Partly Cloudy SSE   12 85% 77°
High 104° MCALLEN, TX 78503 weather forecast Day 2, 6 hours 7 AM 81° 88° Partly Cloudy 0%

0% Thunder
( 4% severe)
SE   12 88% 77°

Clear



MCALLEN, TX 78503 weather forecast Day 2, 9 hours 10 AM 89° 101° Clear SSE   15 66% 76°
MCALLEN, TX 78503 weather forecast Day 2, 12 hours 1 PM 99° 109° Clear 0%

0% Thunder
( 22% severe)
SSE   16 42% 72°
MCALLEN, TX 78503 weather forecast Day 2, 15 hours 4 PM 101° 109° Clear SE   17 37% 70°
MCALLEN, TX 78503 weather forecast Day 2, 18 hours 7 PM 96° 103° Partly Cloudy 0%

0% Thunder
( 5% severe)
SE   20 43% 70°
MCALLEN, TX 78503 weather forecast Day 2, 21 hours 10 PM 86° 95° Partly Cloudy SE   16 70% 75°

MCALLEN, TX extended weather forecast

Friday
21 AUG 2026
Saturday
22 AUG 2026
Sunday
23 AUG 2026
Monday
24 AUG 2026
Tuesday
25 AUG 2026
Low 81° Low 78° Low 78° Low 79° Low 77°
High 102° High 102° High 101° High 101° High 101°
MCALLEN, TX 78503 weather forecast Day 3 MCALLEN, TX 78503 weather forecast Day 4 MCALLEN, TX 78503 weather forecast Day 5 MCALLEN, TX 78503 weather forecast Day 6 MCALLEN, TX 78503 weather forecast Day 7
Clear
11% Rain
Clear
11% Rain
Clear
17% Rain
Clear
18% Rain
Clear
13% Rain
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