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      Elev 4671 ft, 9.532 °S 77.072 °W

      San Marcos, PE

      San Marcos Station40°
      Updated: 2:06 PM GMT-05:00 on September 8, 2026 (GMT -5)
      just now
      55°
      37°
      40
      Feels Like 40
      Rain Shower
      N
      11
      Gusts 22 mph
      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
        Tue 09/08
        High 55°f
         78% Precip. / 0.06 in
        Thunderstorms. High around 55F. Winds NE at 10 to 15 mph. Chance of rain 80%.
        Tonight
        Tue 09/08
        Low 37°f
         24% Precip. / 0 in
        Cloudy. Low 37F. Winds light and variable.
        Tomorrow
        Wed 09/09
        High 55°f38°f
         57% Precip. / 0.06 in
        Mostly cloudy in the morning then periods of showers later in the day. High near 55F. Winds NE at 5 to 10 mph. Chance of rain 60%.
        Hourly Forecast
        Now
        47°
        3PM
        52%
        46°
        4PM
        44°
        5PM
        41°
        6PM
        39°
        6:05PM
        Sunset
        7PM
        37°
        8PM
        37°
        9PM
        36°
        10PM
        41°
        11PM
        41°
        12AM
        41°
        1AM
        40°
        2AM
        40°
        3AM
        40°
        4AM
        39°
        5AM
        39°
        6AM
        38°
        6:05AM
        Sunrise
        7AM
        39°
        8AM
        42°
        9AM
        46°
        10AM
        49°
        11AM
        51°
        12PM
        53°
        1PM
        31%
        55°
        2PM
        55°
        Precipitation
        52%
        Storms likely to end around 4:00 PM
        Pollen
        None
        Air Quality
        54
        Moderate
        UV Index
        8
        Very High
        Additional Conditions
        1. Pressure 29.88 in
        2. Visibility 6 miles
        3. Clouds Mostly Cloudy
        4. Dew Point31°F
        5. Humidity 52%
        6. Rainfall 0.03 in
        7. Snow Depth 0 in
         SPHZ Station History
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 55°F -°F -°F
        4. Low 37°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.06 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 55°F -°F -°F
        4. Low 37°F -°F -°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:06 AM 6:05 PM
        3. Civil Twilight 5:45 AM 6:26 PM
        4. Nautical Twilight 5:20 AM 6:50PM
        5. Astronomical Twilight 4:56 AM 7:15 PM
        1. Length of Visible Light 12h 41m
        2. Length of Day 11h 59m
        3. Tomorrow will be 30 seconds longer
        1. Moon 4:03 AM 4:02 PM
        2. Waning Crescent9% of the Moon is Illuminated
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Precipitation
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