My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Elev 646 ft, 33.645 °N 117.684 °W

      Lake Forest, CA

      Serrano Highlands Station77°
      Updated: 8:05 PM PDT on September 27, 2026 (GMT -7)
      7 minutes ago
      91°
      68°
      77
      Feels Like 78
      Partly Cloudy
      N
      5
      Lower temperature is expected tomorrow
      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
        Tonight
        Mon 09/28
        Low 66°f
         7% Precip. / 0 in
        Overcast. Low 66F. Winds light and variable.
        Tomorrow
        Tue 09/29
        High 81°f
         18% Precip. / 0 in
        A few clouds early, otherwise mostly sunny. Slight chance of a rain shower. High 81F. Winds SW at 10 to 15 mph.
        Tomorrow night
        Tue 09/29
        Low 60°f
         7% Precip. / 0 in
        Mostly clear skies. Low near 60F. Winds light and variable.
        Hourly Forecast
        Now
        76°
        9PM
        75°
        10PM
        74°
        11PM
        73°
        12AM
        72°
        1AM
        71°
        2AM
        70°
        3AM
        70°
        4AM
        69°
        5AM
        68°
        6AM
        67°
        6:43AM
        Sunrise
        7AM
        67°
        8AM
        70°
        9AM
        73°
        10AM
        75°
        11AM
        77°
        12PM
        79°
        1PM
        79°
        2PM
        80°
        3PM
        79°
        4PM
        78°
        5PM
        76°
        6PM
        74°
        6:39PM
        Sunset
        7PM
        71°
        8PM
        68°
        Precipitation
        18%
        Pollen
        None
        Air Quality
        42
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.85 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point64°F
        5. Humidity 64%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KSNA Station History
        Almanac for September 28, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 91°F 86°F 108°F 1963
        4. Low 68°F 59°F 43°F 1945
        5. Rain/Snow Depth
        6. Precipitation 0 in 2.9 in -
        7. Snow 0 in 0 in -
        Almanac for September 29, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 81°F 86°F 106°F
        4. Low 68°F 59°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:43 AM 6:38 PM
        3. Civil Twilight 6:18 AM 7:03 PM
        4. Nautical Twilight 5:49 AM 7:32PM
        5. Astronomical Twilight 5:20 AM 8:01 PM
        1. Length of Visible Light 12h 45m
        2. Length of Day 11h 55m
        3. Tomorrow will be 2 minutes 4 seconds shorter
        1. Moon 7:41 PM 8:51 AM
        2. Waning Gibbous92% 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
        Nearby Weather Stations
        Station Location
        Temp
        Windchill
        Heat Index
        Dew Point
        Humidity
        Wind
        Precip.
        Elev.
        Updated
        Loading nearby stations…
        Precipitation
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareers
        PWS NetworkWunderMap
        Trust CenterTerms of UsePrivacy PolicyData RightsPrivacy SettingsCookie NoticeData VendorsAccessibility Statement
        Level Access
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary