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      Elev 4671 ft, 9.532 °S 77.072 °W

      San Marcos, PE

      San Marcos Station42°
      Updated: 9:01 AM GMT-05:00 on September 19, 2026 (GMT -5)
      8 minutes ago
      51°
      34°
      42
      Feels Like 42
      Cloudy
      N
      4
      Similar temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Sat 09/19
        High 51°f
         87% Precip. / 0.29 in
        Rain showers early then thundershowers for the afternoon. High 51F. Winds ENE at 5 to 10 mph. Chance of rain 90%.
        Tonight
        Sat 09/19
        Low 29°f
         24% Precip. / 0 in
        Cloudy. Low 29F. Winds light and variable.
        Tomorrow
        Sun 09/20
        High 56°f32°f
         73% Precip. / 0.09 in
        Partly cloudy skies during the morning hours will give way to occasional showers in the afternoon. High 56F. Winds ENE at 5 to 10 mph. Chance of rain 70%.
        Hourly Forecast
        Now
        40°
        10AM
        43°
        11AM
        45°
        12PM
        43%
        47°
        1PM
        79%
        47°
        2PM
        86%
        46°
        3PM
        91%
        45°
        4PM
        88%
        43°
        5PM
        79%
        44°
        6PM
        66%
        42°
        6:04PM
        Sunset
        7PM
        35%
        40°
        8PM
        39°
        9PM
        38°
        10PM
        37°
        11PM
        36°
        12AM
        35°
        1AM
        34°
        2AM
        33°
        3AM
        32°
        4AM
        7%
        31°
        5AM
        31°
        5:58AM
        Sunrise
        6AM
        30°
        7AM
        33°
        8AM
        39°
        9AM
        44°
        Precipitation
        91%
        Thunderstorms possible after 12 PM
        Pollen
        None
        Air Quality
        60
        Moderate
        UV Index
        5
        Moderate
        Additional Conditions
        1. Pressure 30.1 in
        2. Visibility 9 miles
        3. Clouds Cloudy
        4. Dew Point30°F
        5. Humidity 67%
        6. Rainfall 0.14 in
        7. Snow Depth 0 in
         SPHZ Station History
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 51°F -°F -°F
        4. Low 34°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.3 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 56°F -°F -°F
        4. Low 34°F -°F -°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 5:59 AM 6:04 PM
        3. Civil Twilight 5:38 AM 6:25 PM
        4. Nautical Twilight 5:14 AM 6:49PM
        5. Astronomical Twilight 4:50 AM 7:14 PM
        1. Length of Visible Light 12h 46m
        2. Length of Day 12h 4m
        3. Tomorrow will be 31 seconds longer
        1. Moon 12:21 PM 12:37 AM
        2. Waxing Gibbous58% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Precipitation
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