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      Heat Advisory
      until 10:00 PM PDT
      +1 more alert
      Elev 35 ft, 37.670 °N 122.454 °W

      South San Francisco, CA

      Winston-Serra Station70°
      Updated: 11:34 AM PDT on October 2, 2026 (GMT -7)
      3 minutes ago
      73°
      53°
      70
      Feels Like 70
      Partly Cloudy
      N
      5
      Higher temperature is expected today
      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
        Today
        Sat 10/03
        High 73°f
         2% Precip. / 0 in
        Some sun this morning with increasing clouds this afternoon. High 73F. Winds NW at 10 to 15 mph.
        Tonight
        Sat 10/03
        Low 55°f
         8% Precip. / 0 in
        A few clouds. Low around 55F. Winds NW at 5 to 10 mph.
        Tomorrow
        Sun 10/04
        High 83°f60°f
         5% Precip. / 0 in
        Partly cloudy skies. High 83F. NE winds shifting to NW at 10 to 15 mph.
        Hourly Forecast
        Now
        65°
        12PM
        66°
        1PM
        68°
        2PM
        70°
        3PM
        70°
        4PM
        70°
        5PM
        67°
        6PM
        65°
        6:51PM
        Sunset
        7PM
        64°
        8PM
        63°
        9PM
        62°
        10PM
        61°
        11PM
        60°
        12AM
        59°
        1AM
        59°
        2AM
        58°
        3AM
        57°
        4AM
        57°
        5AM
        56°
        6AM
        56°
        7AM
        57°
        7:07AM
        Sunrise
        8AM
        60°
        9AM
        64°
        10AM
        68°
        11AM
        73°
        Precipitation
        8%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        56
        Moderate
        UV Index
        5
        Moderate
        Additional Conditions
        1. Pressure 29.92 in
        2. Visibility 6 miles
        3. Clouds Partly Cloudy
        4. Dew Point59°F
        5. Humidity 80%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KSFO Station History
        Almanac for October 2, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 73°F 74°F 96°F 1980
        4. Low 53°F 55°F 41°F 1950
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for October 3, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 83°F 74°F 95°F
        4. Low 55°F 55°F 42°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:06 AM 6:51 PM
        3. Civil Twilight 6:40 AM 7:17 PM
        4. Nautical Twilight 6:09 AM 7:47PM
        5. Astronomical Twilight 5:39 AM 8:18 PM
        1. Length of Visible Light 12h 36m
        2. Length of Day 11h 44m
        3. Tomorrow will be 2 minutes 23 seconds shorter
        1. Moon 11:16 PM 2:01 PM
        2. Waning Gibbous53% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
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