MCALLEN, TX 78503 Weather Forecast & Current Conditions

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78503 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
MCALLEN, TX Current Weather
5:53 PM CDT MAY 17, 2026
Few Clouds 93°F
Feels Like:	105°F
Dewpoint:	75°F
Rel. Hum.:	56%
Visibility:	8 miles
Wind:	SE at 18 mph, gusts to 32
Pressure:	29.67 inches
Last 72 hours
Local Area Snow Depth
Texas Current Weather
Texas MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

78503 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	MCALLEN, TX 78503 Weather Forecast	Snowfall Forecast pages Snow Depth pages

THIS AFTERNOON
Mostly cloudy. Near steady temperature in the lower 90s. Southeast winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 106.

TONIGHT
Mostly cloudy. Humid with lows around 80. Southeast winds 15 to 20 mph with gusts up to 35 mph.

MONDAY
Mostly sunny. Humid with highs in the mid 90s. Southeast winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 109 in the afternoon.

MONDAY NIGHT
Mostly cloudy. Humid with lows around 80. Southeast winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 106 early in the evening.

TUESDAY
Partly sunny. Humid with highs in the mid 90s. Southeast winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 108.

TUESDAY NIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the upper 70s. Chance of rain 40 percent.

WEDNESDAY
Mostly sunny. Highs in the lower 90s.

WEDNESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 70s.

THURSDAY
Mostly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 50 percent.

THURSDAY NIGHT
A chance of thunderstorms. Showers likely. Lows in the mid 70s. Chance of rain 70 percent.

FRIDAY
Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.

FRIDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the mid 70s. Chance of rain 60 percent.

SATURDAY
Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.

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 AM EDT 5/17/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
17 MAY 2026

1 PM

91°

100°

Mostly Cloudy

5%

0% Thunder
( 12% severe)

SSE 22

56%

73°

High 94°

4 PM

93°

103°

Mostly Cloudy

SE 22

54%

74°

Mostly Cloudy

Windy

7 PM

90°

99°

Mostly Cloudy

8%

0% Thunder
( 29% severe)

SE 21

58%

73°

10 PM

84°

93°

Mostly Cloudy

SE 21

77%

76°

Monday
18 MAY 2026

1 AM

82°

90°

Mostly Cloudy

7%

0% Thunder
( 11% severe)

SE 20

85%

77°

Low 81°

4 AM

81°

87°

Mostly Cloudy

SE 17

82%

75°

High 97°

7 AM

81°

87°

Mostly Cloudy

5%

0% Thunder
( 14% severe)

SE 17

82%

75°

Partly Cloudy

Breezy

10 AM

86°

95°

Partly Cloudy

SSE 20

70%

75°

1 PM

92°

102°

Partly Cloudy

7%

0% Thunder
( 19% severe)

SSE 20

56%

74°

4 PM

95°

107°

Partly Cloudy

SE 20

53%

75°

7 PM

90°

101°

Mostly Cloudy

17%
RAIN
<.01 in

0% Thunder
( 38% severe)

SE 20

62%

75°

10 PM

84°

94°

Mostly Cloudy

SE 21

80%

77°

Tuesday
19 MAY 2026

1 AM

82°

91°

Mostly Cloudy

2%

0% Thunder
( 15% severe)

SE 18

88%

78°

Low 81°

4 AM

81°

87°

Mostly Cloudy

SE 16

85%

76°

High 97°

7 AM

81°

87°

Mostly Cloudy

1%

0% Thunder
( 14% severe)

SE 15

85%

76°

Mostly Cloudy

Breezy

10 AM

86°

96°

Mostly Cloudy

SE 16

72%

76°

1 PM

92°

103°

Partly Cloudy

4%

0% Thunder
( 24% severe)

SE 17

58%

75°

4 PM

95°

106°

Mostly Cloudy

SE 16

51%

74°

7 PM

90°

99°

Mostly Cloudy

ESE 17

58%

73°


MCALLEN, TX extended weather forecast
Wednesday 20 MAY 2026	Thursday 21 MAY 2026	Friday 22 MAY 2026	Saturday 23 MAY 2026	Sunday 24 MAY 2026
Low 77°	Low 76°	Low 75°	Low 77°	Low 74°
High 94°	High 93°	High 90°	High 91°	High 93°

Partly Cloudy 35% Rain	Mostly Cloudy 28% Rain	Mostly Cloudy 43% Rain	Overcast 34% Rain	Mostly Cloudy 31% Rain

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