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      Elev 1432 ft, 14.973 °N 91.896 °W

      San Marcos, GT

      Updated: 11:08 PM CST on September 25, 2026 (GMT -6)
      31 seconds ago
      76°
      66°
      62
      Feels Like 62
      Cloudy
      N
      1
      Higher temperature is expected tomorrow
      Wundermap
      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
        Sat 09/26
        Low 66°f
        100% Precip. / 0.28 in
        Rain. Low 66F. Winds light and variable. Chance of rain 100%. Rainfall around a quarter of an inch.
        Tomorrow
        Sun 09/27
        High 79°f
        97% Precip. / 0.61 in
        Rain showers in the morning with thunderstorms developing in the afternoon. High 79F. Winds WSW at 5 to 10 mph. Chance of rain 100%.
        Tomorrow night
        Sun 09/27
        Low 67°f
        44% Precip. / 0.17 in
        Showers in the evening, then cloudy overnight. Hazy. Low 67F. Winds light and variable. Chance of rain 40%.
        Hourly Forecast
        Now
        66°
        12AM
        61%
        66°
        1AM
        100%
        66°
        2AM
        80%
        65°
        3AM
        49%
        67°
        4AM
        66°
        5AM
        66°
        5:57AM
        Sunrise
        6AM
        65°
        7AM
        68°
        8AM
        73°
        9AM
        75°
        10AM
        49%
        77°
        11AM
        55%
        78°
        12PM
        91%
        78°
        1PM
        97%
        78°
        2PM
        91%
        77°
        3PM
        77%
        76°
        4PM
        59%
        75°
        5PM
        56%
        74°
        6PM
        44%
        73°
        6:00PM
        Sunset
        7PM
        40%
        72°
        8PM
        71°
        9PM
        32%
        70°
        10PM
        44%
        70°
        11PM
        70°
        Additional Conditions
        1. Pressure 29.98 in
        2. Visibility 5 miles
        3. Clouds Cloudy
        4. Dew Point65°F
        5. Humidity 99%
        6. Rainfall 1.64 in
        7. Snow Depth 0 in
        MGSM Station History
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 76°F -°F -°F
        4. Low 66°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.28 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 79°F -°F -°F
        4. Low 66°F -°F -°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 5:56 AM 6:00 PM
        3. Civil Twilight 5:35 AM 6:21 PM
        4. Nautical Twilight 5:10 AM 6:46PM
        5. Astronomical Twilight 4:45 AM 7:11 PM
        1. Length of Visible Light 12h 46m
        2. Length of Day 12h 3m
        3. Tomorrow will be 51 seconds shorter
        1. Moon 6:01 PM 5:47 AM
        2. Full99% 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
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        Elev.
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