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      Elev 1432 ft, 14.973 °N 91.896 °W

      San Marcos, GT

      Wed, Oct 21, 2026
      Wednesday
      Wed 10/21
      High 79°f
      96% Precip. / 0.51 in
      Rain showers in the morning with thunderstorms developing in the afternoon. High 79F. Winds SW at 5 to 10 mph. Chance of rain 100%.
      Wednesday night
      Wed 10/21
      Low 66°f
      79% Precip. / 0.09 in
      Showers in the evening with some clearing overnight. Low 66F. Winds light and variable. Chance of rain 80%.
      Sunrise 6:00 AM
      Sunset 5:43 PM
      Moonrise 2:40 PM
      Moonset 1:53 AM
      Waxing Gibbous, 79% visible
      Hourly Forecast
      12AM
      69°
      1AM
      68°
      2AM
      68°
      3AM
      67°
      4AM
      67°
      5AM
      67°
      6AM
      67°
      6:00AM
      Sunrise
      7AM
      68°
      8AM
      72°
      9AM
      34%
      75°
      10AM
      39%
      77°
      11AM
      47%
      78°
      12PM
      96%
      78°
      1PM
      97%
      78°
      2PM
      96%
      78°
      3PM
      96%
      77°
      4PM
      96%
      76°
      5PM
      93%
      74°
      5:44PM
      Sunset
      6PM
      73%
      73°
      7PM
      80%
      72°
      8PM
      59%
      71°
      9PM
      35%
      70°
      10PM
      33%
      70°
      11PM
      30%
      69°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      12:00 am
      Mostly Cloudy
      69°F 70°F 24% 0in 66% 66°F 90% 2 mph NE 29.93in
      1:00 am
      Mostly Cloudy
      68°F 70°F 24% 0in 65% 65°F 90% 2 mph N 29.91in
      2:00 am
      Mostly Cloudy
      68°F 69°F 24% 0in 66% 65°F 90% 2 mph ENE 29.9in
      3:00 am
      Mostly Cloudy
      67°F 68°F 24% 0in 68% 64°F 91% 2 mph ENE 29.89in
      4:00 am
      Mostly Cloudy
      67°F 68°F 22% 0in 72% 64°F 90% 2 mph NE 29.89in
      5:00 am
      Mostly Cloudy
      67°F 68°F 23% 0in 78% 64°F 91% 2 mph NE 29.89in
      6:00 am
      Cloudy
      67°F 68°F 15% 0in 82% 64°F 91% 2 mph NE 29.9in
      7:00 am
      Mostly Cloudy
      68°F 69°F 14% 0in 77% 65°F 89% 2 mph NE 29.91in
      8:00 am
      Mostly Cloudy
      72°F 73°F 14% 0in 67% 67°F 85% 2 mph NE 29.92in
      9:00 am
      Few Showers
      75°F 77°F 34% 0.01in 60% 68°F 79% 2 mph SW 29.92in
      10:00 am
      Showers
      77°F 81°F 39% 0.01in 60% 68°F 74% 3 mph WSW 29.91in
      11:00 am
      Showers
      78°F 82°F 47% 0.02in 68% 69°F 73% 4 mph SW 29.91in
      12:00 pm
      Thunderstorms
      78°F 82°F 96% 0.06in 75% 70°F 74% 4 mph SW 29.89in
      1:00 pm
      Thunderstorms
      78°F 82°F 97% 0.06in 76% 69°F 74% 6 mph SW 29.88in
      2:00 pm
      Thunderstorms
      78°F 82°F 96% 0.06in 82% 70°F 75% 6 mph SW 29.86in
      3:00 pm
      Thunderstorms
      77°F 81°F 96% 0.09in 87% 69°F 76% 7 mph SSW 29.85in
      4:00 pm
      Thunderstorms
      76°F 80°F 96% 0.09in 100% 69°F 81% 5 mph SW 29.86in
      5:00 pm
      Thunderstorms
      74°F 77°F 93% 0.09in 100% 69°F 84% 4 mph SSW 29.87in
      6:00 pm
      Thunderstorms
      73°F 75°F 73% 0.02in 89% 69°F 88% 2 mph NE 29.89in
      7:00 pm
      Thunderstorms
      72°F 74°F 80% 0.03in 86% 68°F 89% 1 mph NE 29.92in
      8:00 pm
      Showers
      71°F 73°F 59% 0.03in 81% 68°F 90% 1 mph NE 29.94in
      9:00 pm
      Showers
      70°F 72°F 35% 0.01in 77% 67°F 91% 1 mph NE 29.96in
      10:00 pm
      Few Showers
      70°F 72°F 33% 0.01in 68% 67°F 90% 2 mph NE 29.96in
      11:00 pm
      Few Showers
      69°F 71°F 30% 0.01in 67% 66°F 90% 2 mph NE 29.95in
      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
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      Windchill
      Heat Index
      Dew Point
      Humidity
      Wind
      Precip.
      Elev.
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      Level Access
      Glossary