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      Extreme Heat Warning
      until 8:00 PM PDT
      Elev 591 ft, 34.024 °N 117.860 °W

      Walnut, CA

      Walnut Station103°
      Updated: 1:33 PM PDT on October 4, 2026 (GMT -7)
      6 minutes ago
      101°
      77°
      103
      Feels Like 105
      Sunny
      N
      6
      Similar 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
        Mon 10/05
        High 101°f
         0% Precip. / 0 in
        Sunny. Hot. High 101F. Winds SW at 5 to 10 mph.
        Tonight
        Mon 10/05
        Low 77°f
         0% Precip. / 0 in
        Clear skies. Low 77F. Winds NNE at 5 to 10 mph.
        Tomorrow
        Tue 10/06
        High 104°f77°f
         0% Precip. / 0 in
        Sunny. Hot. High 104F. E winds shifting to WSW at 10 to 15 mph.
        Hourly Forecast
        Now
        101°
        2PM
        101°
        3PM
        101°
        4PM
        100°
        5PM
        98°
        6PM
        96°
        6:31PM
        Sunset
        7PM
        92°
        8PM
        89°
        9PM
        86°
        10PM
        84°
        11PM
        82°
        12AM
        81°
        1AM
        80°
        2AM
        80°
        3AM
        79°
        4AM
        78°
        5AM
        78°
        6AM
        78°
        6:49AM
        Sunrise
        7AM
        78°
        8AM
        80°
        9AM
        86°
        10AM
        91°
        11AM
        95°
        12PM
        98°
        1PM
        100°
        Precipitation
        0%
        Pollen
        None
        Air Quality
        31
        Good
        UV Index
        6
        High
        Additional Conditions
        1. Pressure 29.84 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point51°F
        5. Humidity 19%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KPOC Station History
        Almanac for October 4, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 101°F 83°F 105°F 1987
        4. Low 77°F 57°F 38°F 1898
        5. Rain/Snow Depth
        6. Precipitation 0 in 3 in -
        7. Snow 0 in 0 in -
        Almanac for October 5, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 104°F 83°F 102°F
        4. Low 77°F 56°F 39°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:48 AM 6:31 PM
        3. Civil Twilight 6:23 AM 6:56 PM
        4. Nautical Twilight 5:54 AM 7:25PM
        5. Astronomical Twilight 5:25 AM 7:54 PM
        1. Length of Visible Light 12h 33m
        2. Length of Day 11h 43m
        3. Tomorrow will be 2 minutes 6 seconds shorter
        1. Moon 12:19 AM 3:11 PM
        2. Waning Crescent41% of the Moon is Illuminated
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
        Nov 1
        Waning Half Last Qtr
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