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New: April-June 2026 Outlook: Warmer than normal temperatures are favored to continue; precipitation is a toss-up; drought, heat risk increases, occasional heavy rain/flooding, & water supply issues are in focus

Current conditions at

Mid Valley Airport (KTXW)

Lat: 26.18°NLon: 97.97°WElev: 70ft.

Mostly Cloudy

78°F

26°C

Humidity	66%
Wind Speed	NE 12 mph
Barometer	30.02 in
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	9 Apr 6:00 pm CDT

More Information:

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

Extended Forecast for

Mercedes TX

Tonight
Low: 68 °F
Showers
Likely then
Chance
T-storms
Friday
High: 83 °F
Chance
T-storms then
Showers
Likely
Friday Night
Low: 70 °F
Slight Chance
T-storms
Saturday
High: 84 °F
Chance
Showers
Saturday Night
Low: 72 °F
Mostly Cloudy
Sunday
High: 86 °F
Partly Sunny
and Breezy
Sunday Night
Low: 72 °F
Mostly Cloudy
Monday
High: 88 °F
Partly Sunny
and Breezy
Monday Night
Low: 73 °F
Partly Cloudy

Detailed Forecast

Tonight

A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 68. East southeast wind 6 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

Friday

Showers and thunderstorms likely, mainly before 4pm. Partly sunny, with a high near 83. East southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

Friday Night

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. East southeast wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Saturday

A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 84. East southeast wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

Saturday Night

Mostly cloudy, with a low around 72. Southeast wind 11 to 16 mph, with gusts as high as 26 mph.

Sunday

Partly sunny, with a high near 86. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 31 mph.

Sunday Night

Mostly cloudy, with a low around 72. Southeast wind 13 to 17 mph, with gusts as high as 26 mph.

Monday

Partly sunny, with a high near 88. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 31 mph.

Monday Night

Partly cloudy, with a low around 73. Southeast wind around 16 mph, with gusts as high as 28 mph.

Tuesday

Partly sunny, with a high near 89. Breezy, with a south southeast wind 16 to 21 mph, with gusts as high as 34 mph.