| NWS Forecast for: Mayaguez and Vicinity Issued by: National Weather Service San Juan, PR Last Update: 243 PM AST Fri Sep 18 2026 |  |
| Tonight: Variably cloudy early this evening, then clearing. Scattered showers with isolated thunderstorms this evening. Lows around 83. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent. Saturday: Partly cloudy in the morning, then variably cloudy with numerous showers with isolated thunderstorms in the afternoon. Highs around 94. East winds 5 to 10 mph. Chance of rain 70 percent. Saturday Night: Variably cloudy with scattered showers with isolated thunderstorms in the evening, then clear after midnight. Lows around 83. East winds 5 to 10 mph. Chance of rain 50 percent. Sunday: Partly cloudy in the morning, then mostly cloudy with numerous showers with isolated thunderstorms in the afternoon. Highs around 93. Temperature falling in the afternoon. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent. Sunday Night: Partly cloudy. Isolated showers in the evening. Lows around 83. East winds 5 to 10 mph. Chance of rain 20 percent. Monday: Sunny in the morning, then mostly cloudy with numerous showers with isolated thunderstorms in the afternoon. Highs around 93. Temperature falling in the afternoon. Chance of rain 60 percent. Monday Night: Clear. Lows around 83. Tuesday: Sunny in the morning, then mostly cloudy with scattered showers with isolated thunderstorms in the afternoon. Highs around 92. Chance of rain 50 percent. Tuesday Night: Clear. Lows around 83. Wednesday: Sunny in the morning, then mostly cloudy with scattered showers with isolated thunderstorms in the afternoon. Highs around 92. Chance of rain 50 percent. Wednesday Night: Partly cloudy with isolated showers. Lows around 83. Chance of rain 20 percent. Thursday: Sunny in the morning, then mostly cloudy with numerous showers with isolated thunderstorms in the afternoon. Highs around 94. Chance of rain 60 percent. Thursday Night: Partly cloudy with isolated showers. Lows around 83. Chance of rain 20 percent. Friday: Sunny in the morning, then mostly cloudy with numerous showers with isolated thunderstorms in the afternoon. Highs around 94. Temperature falling in the afternoon. Chance of rain 60 percent. | |
| Zone Forecast: Mayaguez and Vicinity | |
Visit your local NWS office at: https://www.weather.gov/sju |