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    • Early AM

      Sep 30

      25° Lo
      A shower or thunderstorm
      • Asthma
      • Weather
      • Hi RealFeel: 47°
      • UV: 7 - Very High
      • Air Qual.: Good
      More
    • Today

      Sep 30

      30° /24°C
      Showers and a heavier t-storm
      • Neutral
      • weather for asthma
      • Hi RealFeel: 38°
      • UV: 7 - Very High
      • Air Qual.: Good
    • Sat

      Oct 1

      29° /24°
      Showers and a heavier t-storm
      • Neutral
      • weather for asthma
      • Hi RealFeel: 37°
      • UV: 7 - Very High
      • Air Qual.: Good
      More
    • Sun

      Oct 2

      28° /23°
      Showers and a heavier t-storm
      • At Risk
      • weather for asthma
      • Hi RealFeel: 36°
      • UV: 5 - High
      • Air Qual.: Good
      More
    • Mon

      Oct 3

      29° /24°
      Showers and a heavier t-storm
      • Neutral
      • weather for asthma
      • Hi RealFeel: 36°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More

    Day

    30°Hi RealFeel® 38° Precipitation 65%
    A couple of showers and a heavy thunderstorm; periods of sun; watch for flash flooding
    • NNE 15 km/h
    • Gusts: 18 km/h
    • Max UV Index: 9 (Very High)
    • Thunderstorms: 40%
    • Precipitation: 15 mm
    • Rain: 15 mm
    • Snow: 0 CM
    • Ice: 0 mm
    • Hours of Precipitation: 4 hrs
    • Hours of Rain: 4 hrs

    Night

    24°Lo RealFeel® 25° Precipitation 56%
    Partly cloudy with a shower or thunderstorm
    • N 11 km/h
    • Gusts: 13 km/h
    • Max UV Index: N/A
    • Thunderstorms: 40%
    • Precipitation: 4 mm
    • Rain: 4 mm
    • Snow: 0 CM
    • Ice: 0 mm
    • Hours of Precipitation: 1.5 hrs
    • Hours of Rain: 1.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 30° 31° N/A 33°
    Low 24° 22° N/A 26°

    Sunrise/Sunset

    • Sunrise: 6:31 AM
    • Sunset: 6:29 PM
    • Duration: 11:58 hr

    Moonrise/Moonset

    • Moonrise: 6:08 AM
    • Moonset: 6:28 PM
    • Duration: 12:20 hr
    Astronomy

    San Juan Weather Report

    Hurricane Matthew may approach US next week

    September 29, 2016; 11:55 PM ET

    Matthew has become a hurricane in the Caribbean and may approach the U.S. during next week. More >