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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.

Partly Cloudy

77°F

25°C

Humidity	90%
Wind Speed	NW 8 mph
Barometer	29.93 in (1013.4 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	6 Oct 12:52 am CDT

More Information:

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

Extended Forecast for

Primera TX

Overnight
Low: 72 °F
Chance
Showers
Tuesday
High: 87 °F
Chance
Showers then
Showers
Likely
Tuesday Night
Low: 74 °F
Chance
T-storms
Wednesday
High: 88 °F
Showers
Likely
Wednesday Night
Low: 72 °F
Chance
Showers
Thursday
High: 88 °F
Chance
T-storms then
Showers
Likely
Thursday Night
Low: 72 °F
Chance
T-storms
Friday
High: 88 °F
Chance
T-storms
Friday Night
Low: 71 °F
Partly Cloudy

Detailed Forecast

Overnight

A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 72. North northwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

Tuesday

Showers and thunderstorms likely, mainly before 4pm. Mostly sunny, with a high near 87. North wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

Tuesday Night

A chance of showers and thunderstorms before 3am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 74. North wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Wednesday

A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 88. North northeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

Wednesday Night

A chance of showers, with thunderstorms also possible after 10pm. Mostly clear, with a low around 72. Northeast wind 5 to 10 mph becoming light north northeast. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

Thursday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. North northeast wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

Thursday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. North northeast wind 6 to 10 mph, with gusts as high as 21 mph.

Friday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. North wind 10 to 14 mph, with gusts as high as 25 mph.

Friday Night

Partly cloudy, with a low around 71. North wind 5 to 10 mph, with gusts as high as 21 mph.

Saturday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. North northwest wind around 10 mph, with gusts as high as 21 mph.

Saturday Night

Partly cloudy, with a low around 71. Northeast wind 5 to 7 mph becoming calm in the evening.

Sunday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

Sunday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 73.

Columbus Day

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.