Log In
    Favorites
        Member Settings
      Elev 2000 ft, 34.141 °N 117.580 °W

      Rancho Cucamonga, CA

      Sapphire and Hillside Station76°
      Updated: 2:03 PM PDT on October 21, 2026 (GMT -7)
      2 minutes ago
      76°
      60°
      76
      Feels Like 76
      Mostly Cloudy
      N
      10
      Lower temperature is expected today
      Wundermap

      Loading nearby stations…

       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
        Thu 10/22
        High 75°f
         44% Precip. / 0 in
        Considerable cloudiness with occasional rain showers. High near 75F. Winds WSW at 5 to 10 mph. Chance of rain 40%.
        Tonight
        Thu 10/22
        Low 58°f
         98% Precip. / 0.96 in
        Rain early...then remaining cloudy with showers overnight. Low 58F. Winds SW at 5 to 10 mph. Chance of rain 100%. Rainfall possibly over one inch.
        Tomorrow
        Fri 10/23
        High 63°f54°f
         52% Precip. / 0.15 in
        Mixed clouds and sun with scattered thunderstorms. High 63F. Winds SW at 10 to 15 mph. Chance of rain 50%.
        Hourly Forecast
        Now
        74°
        3PM
        73°
        4PM
        42%
        72°
        5PM
        35%
        70°
        6PM
        68°
        6:08PM
        Sunset
        7PM
        50%
        67°
        8PM
        59%
        65°
        9PM
        84%
        65°
        10PM
        82%
        64°
        11PM
        98%
        64°
        12AM
        90%
        63°
        1AM
        69%
        63°
        2AM
        53%
        62°
        3AM
        47%
        62°
        4AM
        61%
        61°
        5AM
        52%
        61°
        6AM
        39%
        60°
        7AM
        60°
        7:01AM
        Sunrise
        8AM
        39%
        59°
        9AM
        59°
        10AM
        33%
        60°
        11AM
        43%
        61°
        12PM
        52%
        61°
        1PM
        44%
        62°
        2PM
        31%
        62°
        Precipitation
        98%
        Rain possible around 4:30 PM
        Pollen
        None
        Air Quality
        36
        Good
        UV Index
        3
        Moderate
        Additional Conditions
        1. Pressure 29.83 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point52°F
        5. Humidity 46%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KONT Station History
        Almanac for October 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 76°F 82°F 97°F 1965
        4. Low 60°F 55°F 38°F 1953
        5. Rain/Snow Depth
        6. Precipitation 0.96 in 0.01 in -
        7. Snow 0 in - in -
        Almanac for October 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 64°F 81°F 100°F
        4. Low 55°F 55°F 33°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:00 AM 6:08 PM
        3. Civil Twilight 6:35 AM 6:34 PM
        4. Nautical Twilight 6:05 AM 7:03PM
        5. Astronomical Twilight 5:36 AM 7:32 PM
        1. Length of Visible Light 11h 58m
        2. Length of Day 11h 8m
        3. Tomorrow will be 1 minute 58 seconds shorter
        1. Moon 3:41 PM 2:18 AM
        2. Waxing Gibbous80% of the Moon is Illuminated
        Oct 25
        Full Moon
        Nov 1
        Waning Half Last Qtr
        Nov 8
        New Moon
        Nov 17
        Waxing Half First Qtr
        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