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Arroyo Tank Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY |
 |  | | |  | | | | | | | |
| Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny |
| Lo: 80°FLo: 27°C | Hi: 95°FHi: 35°C | Lo: 80°FLo: 27°C | Hi: 95°FHi: 35°C | Lo: 80°FLo: 27°C | Hi: 95°FHi: 35°C | Lo: 80°FLo: 27°C | Hi: 95°FHi: 35°C | Lo: 79°FLo: 26°C | Hi: 95°FHi: 35°C | Lo: 79°FLo: 26°C | Hi: 95°FHi: 35°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Wed Sep 02 2026 
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Issued: 1254 AM CDT Wed Sep 2 2026
Key Messages
Updated at 1249 AM CDT Wed Sep 2 2026- A Heat Advisory is in effect for Cameron, Willacy, and Kenedy counties from noon to 6 PM Wednesday for heat indices up to 115 degrees.
- Hot temperatures, near record to record-breaking, are expected to continue into Labor Day Weekend.
- Widespread Major (Level 3 of 4) to Extreme (Level 4 of 4) Heat Risk of heat-related illness is expected each day.
- Isolated sea breeze showers and thunderstorms are possible each afternoon, especially during Labor Day...