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      Elev 1432 ft, 14.973 °N 91.896 °W

      San Marcos, GT

      Updated: 8:44 AM CST on October 21, 2026 (GMT -6)
      31 seconds ago
      76°
      62°
      68
      Feels Like 68
      Partly Cloudy
      N
      0
      Higher temperature is expected today
      Wundermap

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      Wundermap
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      575
      90
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      7
      0 mph
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      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Wed 10/21
        High 76°f
        100% Precip. / 0.61 in
        Showers and thunderstorms. High 76F. Winds WSW at 5 to 10 mph. Chance of rain 100%.
        Tonight
        Wed 10/21
        Low 63°f
        63% Precip. / 0.06 in
        Thunderstorms early, then mainly cloudy after midnight. Low 63F. Winds light and variable. Chance of rain 60%.
        Tomorrow
        Thu 10/22
        High 77°f63°f
        84% Precip. / 0.56 in
        Thunderstorms likely. High 77F. Winds W at 5 to 10 mph. Chance of rain 80%.
        Hourly Forecast
        Now
        70°
        9AM
        71°
        10AM
        74°
        11AM
        64%
        75°
        12PM
        100%
        76°
        1PM
        100%
        76°
        2PM
        100%
        75°
        3PM
        99%
        74°
        4PM
        97%
        72°
        5PM
        88%
        71°
        5:44PM
        Sunset
        6PM
        82%
        70°
        7PM
        64%
        69°
        8PM
        46%
        69°
        9PM
        38%
        68°
        10PM
        34%
        67°
        11PM
        66°
        12AM
        66°
        1AM
        65°
        2AM
        65°
        3AM
        64°
        4AM
        65°
        5AM
        64°
        6AM
        64°
        6:00AM
        Sunrise
        7AM
        64°
        8AM
        69°
        Additional Conditions
        1. Pressure 29.95 in
        2. Visibility 8 miles
        3. Clouds Partly Cloudy
        4. Dew Point65°F
        5. Humidity 84%
        6. Rainfall 0.08 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 62°F -°F -°F
        5. Rain/Snow Depth
        6. Precipitation 0.67 in - in -
        7. Snow 0 in - in -
        Almanac for
        1. Forecast Average Record
        2. Temperature
        3. High 77°F -°F -°F
        4. Low 63°F -°F -°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:00 AM 5:43 PM
        3. Civil Twilight 5:38 AM 6:05 PM
        4. Nautical Twilight 5:13 AM 6:30PM
        5. Astronomical Twilight 4:48 AM 6:55 PM
        1. Length of Visible Light 12h 26m
        2. Length of Day 11h 43m
        3. Tomorrow will be 46 seconds shorter
        1. Moon 2:40 PM 1:53 AM
        2. Waxing Gibbous79% of the Moon is Illuminated
        Oct 25
        Full Moon
        Nov 1
        Waning Half Last Qtr
        Nov 9
        New Moon
        Nov 17
        Waxing Half First Qtr
        Nearby Weather Stations
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