National Weather Service

News Headlines

New: October-December2026 Outlook - After a brutally hot and dry September, October brings the pattern change to wetter and less hot, with above average rainfall to close out 2026; flash flooding, water supply, & hazardous marine conditions in focus

Current conditions at

Harlingen, Rio Grande Valley International Airport (KHRL)

Lat: 26.23°NLon: 97.66°WElev: 33ft.

Fair

80°F

27°C

Humidity	90%
Wind Speed	SE 6 mph
Barometer	29.73 in (1006.5 mb)
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	1 Oct 5:52 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles SSE San Perlita TX

Today
High: 96 °F
Partly Sunny
then Chance
T-storms
Tonight
Low: 76 °F
Chance
T-storms then
Showers
Likely
Friday
High: 92 °F
Showers
Likely
Friday Night
Low: 73 °F
Showers
Saturday
High: 89 °F
Showers
Saturday Night
Low: 72 °F
Showers
Likely
Sunday
High: 87 °F
Showers
Sunday Night
Low: 71 °F
Showers
Monday
High: 86 °F
Showers

Detailed Forecast

Today

A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 96. Heat index values as high as 113. South southeast wind 10 to 16 mph, with gusts as high as 25 mph.

Tonight

A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 76. Southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

Friday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 92. Heat index values as high as 105. East northeast wind 3 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

Showers and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 73. East northeast wind 5 to 7 mph becoming calm. Chance of precipitation is 80%.

Saturday

Showers and possibly a thunderstorm. High near 89. North northeast wind around 8 mph. Chance of precipitation is 80%.

Saturday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. North northeast wind 3 to 8 mph. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

Sunday

Showers and possibly a thunderstorm. High near 87. North wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

Sunday Night

Showers and possibly a thunderstorm. Low around 71. North wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

Monday

Showers and possibly a thunderstorm. High near 86. North wind around 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

Monday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. North northeast wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

Tuesday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. North wind 11 to 13 mph, with gusts as high as 25 mph.

Tuesday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.

Wednesday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.