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      Elev 4671 ft, 9.532 °S 77.072 °W

      San Marcos, PE

      San Marcos Station38°
      Updated: 8:27 AM GMT-05:00 on September 21, 2026 (GMT -5)
      12 seconds ago
      69°
      44°
      38
      Feels Like 38
      Partly Cloudy
      N
      3
      Same 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
        Mon 09/21
        High 69°f
         49% Precip. / 0.04 in
        Partly cloudy skies this morning will give way to occasional showers during the afternoon. High 69F. Winds NE at 5 to 10 mph. Chance of rain 50%.
        Tonight
        Mon 09/21
        Low 47°f
         24% Precip. / 0 in
        Cloudy. Low 47F. Winds light and variable.
        Tomorrow
        Tue 09/22
        High 66°f46°f
         66% Precip. / 0.11 in
        Partly cloudy skies during the morning hours. Thunderstorms likely in the afternoon. High 66F. Winds ENE at 5 to 10 mph. Chance of rain 70%.
        Hourly Forecast
        Now
        59°
        9AM
        61°
        10AM
        66°
        11AM
        69°
        12PM
        71°
        1PM
        72°
        2PM
        72°
        3PM
        48%
        70°
        4PM
        46%
        65°
        5PM
        42%
        62°
        6PM
        59°
        6:04PM
        Sunset
        7PM
        57°
        8PM
        55°
        9PM
        53°
        10PM
        53°
        11PM
        34%
        52°
        12AM
        51°
        1AM
        50°
        2AM
        50°
        3AM
        49°
        4AM
        49°
        5AM
        48°
        5:58AM
        Sunrise
        6AM
        48°
        7AM
        50°
        8AM
        53°
        Precipitation
        48%
        Rain possible after 3 PM
        Pollen
        None
        Air Quality
        77
        Moderate
        UV Index
        4
        Moderate
        Additional Conditions
        1. Pressure 30.05 in
        2. Visibility 9 miles
        3. Clouds Partly Cloudy
        4. Dew Point46°F
        5. Humidity 63%
        6. Rainfall 0.14 in
        7. Snow Depth 0 in
         SPHZ Station History
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 69°F -°F -°F
        4. Low 44°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.05 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 66°F -°F -°F
        4. Low 44°F -°F -°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 5:58 AM 6:04 PM
        3. Civil Twilight 5:37 AM 6:25 PM
        4. Nautical Twilight 5:13 AM 6:49PM
        5. Astronomical Twilight 4:49 AM 7:14 PM
        1. Length of Visible Light 12h 47m
        2. Length of Day 12h 5m
        3. Tomorrow will be 31 seconds longer
        1. Moon 2:05 PM 2:14 AM
        2. Waxing Gibbous76% 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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