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      Elev 1400 ft, 34.128 °N 117.533 °W

      Rancho Cucamonga, CA

      Updated: 1:09 AM PDT on September 14, 2026 (GMT -7)
      5 minutes ago
      75°
      69°
      67
      Feels Like 67
      Clear
      N
      4
      Similar temperature is expected today
      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 09/14
        Low 65°f
        3% Precip. / 0 in
        Generally clear skies. Low around 65F. Winds light and variable.
        Tomorrow
        Tue 09/15
        High 90°f
        2% Precip. / 0 in
        Abundant sunshine. High around 90F. Winds SW at 10 to 15 mph.
        Tomorrow night
        Tue 09/15
        Low 64°f
        7% Precip. / 0 in
        Mostly clear. Low 64F. Winds WSW at 10 to 15 mph.
        Hourly Forecast
        Now
        68°
        2AM
        67°
        3AM
        67°
        4AM
        67°
        5AM
        67°
        6AM
        66°
        6:33AM
        Sunrise
        7AM
        66°
        8AM
        70°
        9AM
        73°
        10AM
        76°
        11AM
        79°
        12PM
        82°
        1PM
        85°
        2PM
        87°
        3PM
        89°
        4PM
        88°
        5PM
        87°
        6PM
        84°
        6:57PM
        Sunset
        7PM
        80°
        8PM
        76°
        9PM
        74°
        10PM
        72°
        11PM
        70°
        12AM
        69°
        1AM
        68°
        Additional Conditions
        1. Pressure 29.83 in
        2. Visibility 9 miles
        3. Clouds Clear
        4. Dew Point63°F
        5. Humidity 84%
        6. Rainfall 0 in
        7. Snow Depth 0 in
        KONT Station History
        Almanac for September 14, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 75°F 91°F 113°F 1971
        4. Low 69°F 62°F 52°F 1954
        5. Rain/Snow Depth
        6. Precipitation 0 in 0.01 in -
        7. Snow 0 in - in -
        Almanac for September 15, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 88°F 91°F 104°F
        4. Low 69°F 62°F 48°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:32 AM 6:57 PM
        3. Civil Twilight 6:07 AM 7:22 PM
        4. Nautical Twilight 5:38 AM 7:52PM
        5. Astronomical Twilight 5:08 AM 8:22 PM
        1. Length of Visible Light 13h 15m
        2. Length of Day 12h 25m
        3. Tomorrow will be 2 minutes 6 seconds shorter
        1. Moon 10:12 AM 8:44 PM
        2. Waxing Crescent14% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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        Weather Alerts
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