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      Elev 989 ft, 13.644 °N 89.191 °W

      San Marcos, SV

      Los Planes de Renderos Station81°
      Updated: 2:17 PM CST on October 23, 2026 (GMT -6)
      6 minutes ago
      84°
      68°
      81
      Feels Like 85
      Partly Cloudy
      N
      5
      Similar temperature is expected today
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      50
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      575
      90
      50
      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
        Fri 10/23
        High 83°f
         82% Precip. / 0 in
        Thunderstorms likely. High 83F. Winds light and variable. Chance of rain 80%.
        Tonight
        Fri 10/23
        Low 65°f
         3% Precip. / 0 in
        Considerable clouds this evening. Some decrease in clouds late. Low near 65F. Winds N at 5 to 10 mph.
        Tomorrow
        Sat 10/24
        High 84°f65°f
         4% Precip. / 0 in
        Intervals of clouds and sunshine. High 84F. Winds N at 5 to 10 mph.
        Hourly Forecast
        Now
        82°
        3PM
        62%
        81°
        4PM
        80°
        5PM
        78°
        5:33PM
        Sunset
        6PM
        76°
        7PM
        74°
        8PM
        73°
        9PM
        72°
        10PM
        72°
        11PM
        71°
        12AM
        70°
        1AM
        69°
        2AM
        68°
        3AM
        67°
        4AM
        67°
        5AM
        67°
        5:49AM
        Sunrise
        6AM
        66°
        7AM
        69°
        8AM
        73°
        9AM
        77°
        10AM
        80°
        11AM
        81°
        12PM
        82°
        1PM
        83°
        2PM
        83°
        Precipitation
        62%
        Storms likely to end around 3:30 PM
        Pollen
        None
        Air Quality
        39
        Good
        UV Index
        3
        Moderate
        Additional Conditions
        1. Pressure 29.92 in
        2. Visibility 6 miles
        3. Clouds Partly Cloudy
        4. Dew Point67°F
        5. Humidity 62%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         MSSS Station History
        Almanac for October 23, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 84°F 86°F 90°F 1957
        4. Low 68°F 67°F 61°F 1961
        5. Rain/Snow Depth
        6. Precipitation 0 in 0.31 in -
        7. Snow 0 in - in -
        Almanac for October 24, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 84°F 86°F 91°F
        4. Low 65°F 67°F 60°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 5:48 AM 5:32 PM
        3. Civil Twilight 5:27 AM 5:54 PM
        4. Nautical Twilight 5:02 AM 6:19PM
        5. Astronomical Twilight 4:37 AM 6:44 PM
        1. Length of Visible Light 12h 27m
        2. Length of Day 11h 44m
        3. Tomorrow will be 41 seconds shorter
        1. Moon 3:44 PM 3:23 AM
        2. Waxing Gibbous93% 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
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