HARLINGEN, TX 78553 Weather Forecast & Current Conditions

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78553 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
HARLINGEN, TX Current Weather
10:52 PM CDT MAY 18, 2026
Overcast 82°F
Feels Like:	90°F
Dewpoint:	77°F
Rel. Hum.:	85%
Visibility:	10 miles
Wind:	SSE at 18 mph, gusts to 28
Pressure:	29.87 inches
Last 72 hours
Local Area Snow Depth
Texas Current Weather
Texas MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

78553 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	HARLINGEN, TX 78553 Weather Forecast	Snowfall Forecast pages Snow Depth pages

OVERNIGHT
Mostly cloudy. Near steady temperature in the lower 80s. Southeast winds 15 to 20 mph with gusts up to 30 mph.

TUESDAY
Mostly cloudy in the morning, then becoming partly sunny. Humid with highs in the mid 90s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 110.

TUESDAY NIGHT
Mostly cloudy. Humid with lows around 80. Southeast winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 105 early in the evening.

WEDNESDAY
Partly sunny. Humid with highs in the lower 90s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

WEDNESDAY NIGHT
Mostly cloudy. Humid with lows in the upper 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. Highs in the lower 90s. Chance of rain 50 percent.

THURSDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 50 percent.

FRIDAY
Mostly cloudy in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 50 percent.

FRIDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 50 percent.

SATURDAY
Partly sunny with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs around 90. Chance of rain 60 percent.

SATURDAY NIGHT
A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 70s. Chance of rain 70 percent.

SUNDAY
Showers likely with a chance of thunderstorms. Highs in the upper 80s. Chance of rain 70 percent.

SUNDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the mid 70s. Chance of rain 50 percent.

78553 WEATHER SATELLITE LOOPS

Visible Weather Satellite
HARLINGEN, TX 78553

Infrared Weather Satellite
HARLINGEN, TX 78553

78553 WEATHER RADAR LOOP

NEXRAD Weather Radar
HARLINGEN, TX 78553

MOS COMPUTER WEATHER FORECAST

HARLINGEN, TX 3 hourly weather forecast

weather forecast created 8:00 AM EDT 5/18/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
18 MAY 2026

1 PM

93°

105°

Partly Cloudy

8%

0% Thunder
( 11% severe)

SSE 22

56%

75°

High 96°

4 PM

95°

107°

Partly Cloudy

SSE 22

53%

75°

Mostly Cloudy

Windy

7 PM

88°

99°

Mostly Cloudy

11%
RAIN
.1–.25 in

0% Thunder
( 24% severe)

SE 21

68%

76°

10 PM

84°

94°

Mostly Cloudy

SE 22

80%

77°

Tuesday
19 MAY 2026

1 AM

83°

92°

Mostly Cloudy

10%
RAIN
.1–.25 in

0% Thunder
( 15% severe)

SE 18

82%

77°

Low 79°

4 AM

81°

87°

Mostly Cloudy

SE 14

85%

76°

High 95°

7 AM

80°

85°

Mostly Cloudy

4%

0% Thunder
( 13% severe)

SE 14

85%

75°

Mostly Cloudy

Breezy

10 AM

87°

97°

Mostly Cloudy

SE 18

68%

75°

1 PM

92°

103°

Partly Cloudy

6%

0% Thunder
( 17% severe)

SE 20

58%

75°

4 PM

94°

106°

Partly Cloudy

SE 20

54%

75°

7 PM

88°

99°

Mostly Cloudy

3%

0% Thunder
( 25% severe)

SE 18

68%

76°

10 PM

84°

94°

Mostly Cloudy

SE 17

80%

77°

Wednesday
20 MAY 2026

1 AM

83°

92°

Mostly Cloudy

26%
RAIN
***

0% Thunder
( 22% severe)

SE 13

82%

77°

Low 79°

4 AM

81°

88°

Mostly Cloudy

SE 12

88%

77°

High 93°

7 AM

79°

83°

Mostly Cloudy

7%

0% Thunder
( 14% severe)

ESE 13

91%

76°

Mostly Cloudy

10 AM

85°

93°

Mostly Cloudy

SE 15

72%

75°

1 PM

90°

99°

Partly Cloudy

3%

0% Thunder
( 16% severe)

SE 16

58%

73°

4 PM

91°

100°

Partly Cloudy

SE 17

56%

73°

7 PM

86°

94°

Partly Cloudy

ESE 17

68%

74°


HARLINGEN, TX extended weather forecast
Thursday 21 MAY 2026	Friday 22 MAY 2026	Saturday 23 MAY 2026	Sunday 24 MAY 2026	Monday 25 MAY 2026
Low 76°	Low 72°	Low 75°	Low 71°	Low 72°
High 94°	High 90°	High 93°	High 89°	High 91°

Overcast 30% Rain	Overcast 64% Rain	Overcast 46% Rain	Overcast 52% Rain	Mostly Cloudy 33% Rain

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