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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

Mid Valley Airport (KTXW)

Lat: 26.18°NLon: 97.97°WElev: 70ft.

Light Rain Fog/Mist

76°F

24°C

Humidity	94%
Wind Speed	E 3 mph
Barometer	29.85 in
Dewpoint	74°F (23°C)
Visibility	2.50 mi
Heat Index	76°F (24°C)
Last update	1 Oct 10:55 pm CDT

More Information:

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

Extended Forecast for

Weslaco TX

Tonight
Low: 76 °F
Showers
Likely
Friday
High: 92 °F
Chance
Showers then
Showers
Likely
Friday Night
Low: 74 °F
Showers
Likely
Saturday
High: 90 °F
Showers
Likely then
T-storms
Saturday Night
Low: 74 °F
Showers
Sunday
High: 87 °F
Showers
Likely then
T-storms
Sunday Night
Low: 73 °F
Showers
Likely
Monday
High: 85 °F
Showers
Likely
Monday Night
Low: 72 °F
Chance
T-storms

Detailed Forecast

Tonight

Showers and thunderstorms likely. Mostly cloudy, with a low around 76. Southeast wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday

A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 92. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 74. East northeast wind around 6 mph becoming calm. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Saturday

Showers and possibly a thunderstorm. High near 90. North wind around 8 mph. Chance of precipitation is 80%.

Saturday Night

Showers and possibly a thunderstorm. Low around 74. North wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Sunday

Showers and possibly a thunderstorm. High near 87. North wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 73. North wind 7 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

Monday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. North wind 11 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

Monday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. North wind 6 to 10 mph, with gusts as high as 25 mph.

Tuesday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. North wind 10 to 13 mph, with gusts as high as 29 mph.

Tuesday Night

Partly cloudy, with a low around 71. North wind 3 to 8 mph.

Wednesday

A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.

Wednesday Night

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

Thursday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.