My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 4671 ft, 9.532 °S 77.072 °W

      San Marcos, PE

      San Marcos Station44°
      Updated: 9:52 AM GMT-05:00 on September 19, 2026 (GMT -5)
      just now
      54°
      36°
      44
      Feels Like 43
      Cloudy
      N
      5
      Higher 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 54°f
         95% Precip. / 0.31 in
        Showers this morning then thundershowers developing during the afternoon hours. High 54F. Winds ENE at 5 to 10 mph. Chance of rain 100%.
        Tonight
        Sat 09/19
        Low 32°f
         24% Precip. / 0 in
        Cloudy this evening. Fog developing late. Low 32F. Winds light and variable.
        Tomorrow
        Sun 09/20
        High 58°f35°f
         76% Precip. / 0.09 in
        Partly cloudy in the morning. Increasing clouds with periods of showers later in the day. High 58F. Winds ENE at 5 to 10 mph. Chance of rain 80%.
        Hourly Forecast
        Now
        43°
        10AM
        33%
        43°
        11AM
        46°
        12PM
        43%
        48°
        1PM
        79%
        48°
        2PM
        86%
        47°
        3PM
        99%
        45°
        4PM
        100%
        43°
        5PM
        84%
        46°
        6PM
        70%
        45°
        6:04PM
        Sunset
        7PM
        38%
        43°
        8PM
        42°
        9PM
        41°
        10PM
        40°
        11PM
        38°
        12AM
        38°
        1AM
        37°
        2AM
        36°
        3AM
        35°
        4AM
        7%
        34°
        5AM
        6%
        34°
        5:58AM
        Sunrise
        6AM
        33°
        7AM
        36°
        8AM
        42°
        9AM
        46°
        Precipitation
        100%
        Thunderstorms possible after 10 AM
        Pollen
        None
        Air Quality
        65
        Moderate
        UV Index
        7
        High
        Additional Conditions
        1. Pressure 30.06 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point29°F
        5. Humidity 58%
        6. Rainfall 0.13 in
        7. Snow Depth 0 in
         SPHZ Station History
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 54°F -°F -°F
        4. Low 36°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.32 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 58°F -°F -°F
        4. Low 36°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
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareersWeather Data APIs
        PWS NetworkWundermap
        Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
        essentialaccessibility.com
        We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
        Review All Privacy and Ad Settings
        Choose how my information is shared
        Data Rights
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary