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      Elev 2523 ft, 39.219 °N 121.066 °W

      Grass Valley, CA

      High Street Station67°
      Updated: 8:59 PM PDT on September 20, 2026 (GMT -7)
      10 minutes ago
      81°
      58°
      67
      Feels Like 67
      Clear
      N
      1
      Similar temperature is expected tomorrow
      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 09/21
        Low 62°f
         1% Precip. / 0 in
        Partly cloudy. Low 62F. Winds light and variable.
        Tomorrow
        Tue 09/22
        High 78°f
         1% Precip. / 0 in
        Partly cloudy. High 78F. Winds light and variable.
        Tomorrow night
        Tue 09/22
        Low 60°f
         1% Precip. / 0 in
        Mostly clear skies. Low around 60F. Winds light and variable.
        Hourly Forecast
        Now
        67°
        9PM
        67°
        10PM
        67°
        11PM
        67°
        12AM
        68°
        1AM
        67°
        2AM
        66°
        3AM
        66°
        4AM
        65°
        5AM
        64°
        6AM
        63°
        6:51AM
        Sunrise
        7AM
        63°
        8AM
        65°
        9AM
        67°
        10AM
        70°
        11AM
        72°
        12PM
        74°
        1PM
        75°
        2PM
        76°
        3PM
        77°
        4PM
        77°
        5PM
        76°
        6PM
        74°
        7PM
        72°
        7:02PM
        Sunset
        8PM
        68°
        Precipitation
        1%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        46
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.89 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point50°F
        5. Humidity 54%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KGOO Station History
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 81°F 81°F 95°F 1974
        4. Low 58°F 51°F 38°F 1986
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.1 in -
        7. Snow 0 in 0 in -
        Almanac for September 22, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 78°F 81°F 96°F
        4. Low 58°F 51°F 38°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:51 AM 7:02 PM
        3. Civil Twilight 6:24 AM 7:29 PM
        4. Nautical Twilight 5:53 AM 8:00PM
        5. Astronomical Twilight 5:21 AM 8:32 PM
        1. Length of Visible Light 13h 4m
        2. Length of Day 12h 11m
        3. Tomorrow will be 2 minutes 32 seconds shorter
        1. Moon 4:41 PM 1:30 AM
        2. Waxing Gibbous78% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Precipitation
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