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      Elev 1432 ft, 14.973 °N 91.896 °W

      San Marcos, GT

      Mon, Oct 19, 2026
      Monday
      Mon 10/19
      High 78°f
      99% Precip. / 0.5 in
      Thunderstorms. High 78F. Winds WSW at 5 to 10 mph. Chance of rain 100%.
      Monday night
      Mon 10/19
      Low 66°f
      47% Precip. / 0.06 in
      Rain showers early with mostly cloudy conditions late. Hazy. Low 66F. Winds light and variable. Chance of rain 50%.
      Sunrise 5:59 AM
      Sunset 5:44 PM
      Moonrise 1:23 PM
      Moonset 12:11 AM
      Waxing Gibbous, 60% visible
      Hourly Forecast
      12AM
      34%
      69°
      1AM
      30%
      69°
      2AM
      33%
      68°
      3AM
      31%
      68°
      4AM
      68°
      5AM
      68°
      5:59AM
      Sunrise
      6AM
      67°
      7AM
      68°
      8AM
      71°
      9AM
      74°
      10AM
      43%
      76°
      11AM
      63%
      77°
      12PM
      97%
      77°
      1PM
      99%
      77°
      2PM
      99%
      77°
      3PM
      87%
      76°
      4PM
      85%
      74°
      5PM
      80%
      73°
      5:45PM
      Sunset
      6PM
      65%
      73°
      7PM
      47%
      71°
      8PM
      40%
      71°
      9PM
      33%
      70°
      10PM
      70°
      11PM
      69°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      12:00 am
      Few Showers
      69°F 71°F 34% 0.02in 95% 68°F 95% 1 mph NE 29.92in
      1:00 am
      Few Showers
      69°F 71°F 30% 0.02in 95% 67°F 94% 1 mph NNW 29.9in
      2:00 am
      Few Showers
      68°F 70°F 33% 0.01in 85% 67°F 96% 1 mph ENE 29.89in
      3:00 am
      Few Showers
      68°F 70°F 31% 0.02in 79% 67°F 96% 1 mph ENE 29.88in
      4:00 am
      Mostly Cloudy
      68°F 70°F 24% 0in 71% 67°F 95% 1 mph NNE 29.87in
      5:00 am
      Mostly Cloudy
      68°F 70°F 24% 0in 73% 66°F 94% 2 mph NE 29.86in
      6:00 am
      Cloudy
      67°F 69°F 24% 0in 80% 67°F 97% 2 mph NE 29.88in
      7:00 am
      Cloudy
      68°F 70°F 24% 0in 80% 67°F 96% 2 mph NE 29.9in
      8:00 am
      Cloudy
      71°F 74°F 21% 0in 89% 69°F 91% 2 mph NNE 29.91in
      9:00 am
      Cloudy
      74°F 76°F 24% 0in 85% 69°F 84% 2 mph NW 29.91in
      10:00 am
      Showers
      76°F 80°F 43% 0.02in 82% 70°F 81% 3 mph W 29.9in
      11:00 am
      Thunderstorms
      77°F 81°F 63% 0.04in 83% 70°F 78% 4 mph SW 29.89in
      12:00 pm
      Thunderstorms
      77°F 82°F 97% 0.09in 100% 71°F 81% 5 mph WSW 29.87in
      1:00 pm
      Thunderstorms
      77°F 82°F 99% 0.09in 100% 71°F 80% 5 mph SW 29.85in
      2:00 pm
      Thunderstorms
      77°F 81°F 99% 0.09in 100% 71°F 81% 6 mph SW 29.83in
      3:00 pm
      Thunderstorms
      76°F 80°F 87% 0.05in 99% 70°F 83% 6 mph SSW 29.82in
      4:00 pm
      Thunderstorms
      74°F 76°F 85% 0.04in 98% 70°F 87% 5 mph SW 29.83in
      5:00 pm
      Thunderstorms
      73°F 76°F 80% 0.04in 97% 70°F 88% 3 mph SSW 29.84in
      6:00 pm
      Thunderstorms
      73°F 75°F 65% 0.02in 97% 69°F 88% 2 mph NE 29.86in
      7:00 pm
      Scattered Thunderstorms
      71°F 73°F 47% 0.01in 95% 68°F 90% 2 mph NE 29.86in
      8:00 pm
      Showers
      71°F 73°F 40% 0.02in 92% 68°F 91% 1 mph NE 29.88in
      9:00 pm
      Few Showers
      70°F 72°F 33% 0.01in 89% 68°F 92% 1 mph NE 29.9in
      10:00 pm
      Cloudy
      70°F 72°F 24% 0in 88% 67°F 93% 2 mph NE 29.91in
      11:00 pm
      Cloudy
      69°F 71°F 17% 0in 80% 67°F 92% 2 mph NE 29.9in
      Additional Conditions
      1. Pressure 29.95 in
      2. Visibility 4 miles
      3. Clouds Cloudy
      4. Dew Point66°F
      5. Humidity 95%
      6. Rainfall 0 in
      7. Snow Depth 0 in
      MGSM Station History
      Almanac for
      1. Forecast Average Record
      2. Temperature
      3. High 77°F -°F -°F
      4. Low 65°F -°F -°F
      5. Rain/Snow Depth
      6. Precipitation 0 in - in -
      7. Snow 0 in - in -
      Almanac for
      1. Forecast Average Record
      2. Temperature
      3. High 78°F -°F -°F
      4. Low 66°F -°F -°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 5:59 AM 5:46 PM
      3. Civil Twilight 5:37 AM 6:07 PM
      4. Nautical Twilight 5:12 AM 6:32PM
      5. Astronomical Twilight 4:47 AM 6:57 PM
      1. Length of Visible Light 12h 29m
      2. Length of Day 11h 46m
      3. Tomorrow will be 47 seconds shorter
      1. Moon 11:57 AM 11:19 PM
      2. Waxing Crescent41% of the Moon is Illuminated
      Oct 18
      Waxing Half First Qtr
      Oct 25
      Full Moon
      Nov 1
      Waning Half Last Qtr
      Nov 9
      New Moon
      Nearby Weather Stations
      Station Location
      Temp
      Windchill
      Heat Index
      Dew Point
      Humidity
      Wind
      Precip.
      Elev.
      Updated
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      Level Access
      Glossary