MCALLEN, TX 78503 Weather Forecast & Current Conditions
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  78503 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

MCALLEN, TX
Current Weather
3:53 AM CDT SEP 21, 2026
Clear
82°F
Feels Like: 90°F
Dewpoint: 77°F
Rel. Hum.: 85%
Visibility: 10 miles
Wind: ESE at 5 mph
Pressure: 29.88 inches
Last 72 hours

Local Area Snow Depth

Texas Current Weather

Texas MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  78503 WEATHER FORECAST
10-Day model forecast maps
2026 Hurricanes

MCALLEN, TX 78503
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Partly cloudy. Near steady temperature around 80. Southeast winds around 5 mph.
MONDAY
Sunny. A slight chance of showers and thunderstorms in the afternoon. Humid 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. Chance of rain 20 percent. Heat index values up to 110.
MONDAY NIGHT
Clear with lows in the upper 70s. East winds 10 to 15 mph with gusts up to 25 mph, diminishing to around 5 mph after midnight.
TUESDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 90s. Northeast winds around 5 mph, increasing to east 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of rain 50 percent. Heat index values up to 108.
TUESDAY NIGHT
Mostly clear. A chance of showers and thunderstorms in the evening. 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. Chance of rain 40 percent.
WEDNESDAY
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 105.
WEDNESDAY NIGHT
Mostly clear. Lows in the upper 70s.
THURSDAY
Mostly sunny. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 60 percent. Heat index values up to 110.
THURSDAY NIGHT
Partly cloudy in the evening, then clearing. 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 50 percent. Heat index values up to 105.
FRIDAY NIGHT
Partly cloudy. Lows in the mid 70s.
SATURDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the upper 90s. Chance of rain 40 percent. Heat index values up to 105.
SATURDAY NIGHT
Partly cloudy. Lows in the mid 70s.

  78503 WEATHER SATELLITE LOOPS
Visible Weather Satellite
MCALLEN, TX 78503
Infrared Weather Satellite
MCALLEN, TX 78503
  78503 WEATHER RADAR LOOP
NEXRAD Weather Radar
MCALLEN, TX 78503
 MOS COMPUTER WEATHER FORECAST

MCALLEN, TX 3 hourly weather forecast
weather forecast created  8:00 PM EDT  9/20/2026
Monday
21 SEP 2026		 MCALLEN, TX 78503 weather forecast Day 1, 0 hours 1 AM 83° 92° Partly Cloudy 2%

 0% Thunder
( 8% severe)		 SE   6 82% 77°
Low 79° MCALLEN, TX 78503 weather forecast Day 1, 3 hours 4 AM 82° 90° Partly Cloudy SE   5 85% 77°
High 102° MCALLEN, TX 78503 weather forecast Day 1, 6 hours 7 AM 80° 86° Partly Cloudy 2%

 0% Thunder
( 12% severe)		   CALM 91% 77°

Partly Cloudy

Chance of Rain

 MCALLEN, TX 78503 weather forecast Day 1, 9 hours 10 AM 87° 99° Partly Cloudy   CALM 72% 77°
MCALLEN, TX 78503 weather forecast Day 1, 12 hours 1 PM 96° 105° Partly Cloudy 25%
RAIN
.1–.25 in		 0% Thunder
( 30% severe)		 E   5 46% 72°
MCALLEN, TX 78503 weather forecast Day 1, 15 hours 4 PM 98° 106° Partly Cloudy E   10 42% 71°
MCALLEN, TX 78503 weather forecast Day 1, 18 hours 7 PM 92° 100° Partly Cloudy 1%

 0% Thunder
( 5% severe)		 E   16 52% 72°
MCALLEN, TX 78503 weather forecast Day 1, 21 hours 10 PM 85° 93° Clear ESE   10 70% 74°
Tuesday
22 SEP 2026		 MCALLEN, TX 78503 weather forecast Day 2, 0 hours 1 AM 82° 89° Clear 2%

 0% Thunder
( 6% severe)		 ESE   3 82% 76°
Low 79° MCALLEN, TX 78503 weather forecast Day 2, 3 hours 4 AM 81° 87° Clear   CALM 85% 76°
High 99° MCALLEN, TX 78503 weather forecast Day 2, 6 hours 7 AM 79° 83° Clear 7%

 0% Thunder
( 10% severe)		 NE   3 91% 76°

Increasing Clouds

Chance of Rain

 MCALLEN, TX 78503 weather forecast Day 2, 9 hours 10 AM 87° 98° Clear ENE   5 70% 76°
MCALLEN, TX 78503 weather forecast Day 2, 12 hours 1 PM 95° 104° Partly Cloudy 48%
RAIN
.01–.1 in		 0% Thunder
( 28% severe)		 E   8 48% 72°
MCALLEN, TX 78503 weather forecast Day 2, 15 hours 4 PM 95° 105° Mostly Cloudy E   13 49% 73°
MCALLEN, TX 78503 weather forecast Day 2, 18 hours 7 PM 90° 98° Clear 2%

 0% Thunder
( 7% severe)		 E   16 56% 72°
MCALLEN, TX 78503 weather forecast Day 2, 21 hours 10 PM 84° 91° Clear E   7 72% 74°

MCALLEN, 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 79° Low 78° Low 77° Low 76° Low 78°
High 99° High 98° High 99° High 97° High 96°
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
Partly Cloudy
30% Rain		 Partly Cloudy
31% Rain		 Partly Cloudy
29% Rain		 Partly Cloudy
29% Rain		 Partly Cloudy
29% Rain
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