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      Elev 4671 ft, 9.532 °S 77.072 °W

      San Marcos, PE

      San Marcos Station36°
      Updated: 11:54 PM GMT-05:00 on September 16, 2026 (GMT -5)
      5 minutes ago
      52°
      33°
      36
      Feels Like 36
      Cloudy
      N
      5
      Lower temperature is expected tomorrow
      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
        Tonight
        Wed 09/16
        Low 33°f
         39% Precip. / 0.02 in
        Considerable cloudiness. Occasional rain showers after midnight. Low 33F. Winds light and variable. Chance of rain 40%.
        Tomorrow
        Thu 09/17
        High 48°f
         24% Precip. / 0 in
        Mostly cloudy skies. High 48F. Winds NE at 10 to 15 mph.
        Tomorrow night
        Thu 09/17
        Low 33°f
         23% Precip. / 0 in
        Overcast. Low 33F. Winds ESE at 5 to 10 mph.
        Hourly Forecast
        Now
        34°
        12AM
        34°
        1AM
        34°
        2AM
        33°
        3AM
        31%
        32°
        4AM
        32°
        5AM
        32°
        6AM
        32°
        6:00AM
        Sunrise
        7AM
        36°
        8AM
        38°
        9AM
        40°
        10AM
        42°
        11AM
        43°
        12PM
        46°
        1PM
        47°
        2PM
        47°
        3PM
        48°
        4PM
        47°
        5PM
        44°
        6PM
        42°
        6:04PM
        Sunset
        7PM
        40°
        8PM
        38°
        9PM
        37°
        10PM
        37°
        11PM
        36°
        Precipitation
        31%
        Wintry mix possible after 3 AM
        Pollen
        None
        Air Quality
        54
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.09 in
        2. Visibility 3 miles
        3. Clouds Cloudy
        4. Dew Point31°F
        5. Humidity 86%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         SPHZ Station History
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 52°F -°F -°F
        4. Low 33°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.02 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 48°F -°F -°F
        4. Low 33°F -°F -°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:00 AM 6:04 PM
        3. Civil Twilight 5:39 AM 6:25 PM
        4. Nautical Twilight 5:15 AM 6:49PM
        5. Astronomical Twilight 4:51 AM 7:14 PM
        1. Length of Visible Light 12h 45m
        2. Length of Day 12h 3m
        3. Tomorrow will be 32 seconds longer
        1. Moon 10:39 AM 11:45 PM
        2. Waxing Crescent38% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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