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      Elev 3600 ft, 41.313 °N 122.309 °W

      Mount Shasta, CA

      Downtown Mt Shasta Station54°
      Updated: 9:42 AM PDT on September 17, 2026 (GMT -7)
      6 minutes ago
      67°
      39°
      54
      Feels Like 54
      Sunny
      N
      1
      Lower 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
        Today
        Fri 09/18
        High 67°f
         51% Precip. / 0.09 in
        Sunny early then increasing clouds with some scattered thunderstorms this afternoon. High 67F. Winds light and variable. Chance of rain 50%.
        Tonight
        Fri 09/18
        Low 43°f
         24% Precip. / 0 in
        Some clouds this evening will give way to mainly clear skies overnight. Low 43F. Winds light and variable.
        Tomorrow
        Sat 09/19
        High 77°f45°f
         6% Precip. / 0 in
        Sunny skies. High 77F. Winds light and variable.
        Hourly Forecast
        Now
        53°
        10AM
        55°
        11AM
        59°
        12PM
        63°
        1PM
        34%
        66°
        2PM
        51%
        65°
        3PM
        65°
        4PM
        65°
        5PM
        64°
        6PM
        42%
        62°
        7PM
        32%
        59°
        7:14PM
        Sunset
        8PM
        57°
        9PM
        53°
        10PM
        52°
        11PM
        51°
        12AM
        49°
        1AM
        48°
        2AM
        47°
        3AM
        46°
        4AM
        45°
        5AM
        44°
        6AM
        44°
        6:53AM
        Sunrise
        7AM
        44°
        8AM
        47°
        9AM
        55°
        Precipitation
        51%
        Thunderstorms possible after 1 PM
        Pollen
        None
        Air Quality
        19
        Good
        UV Index
        2
        Low
        Additional Conditions
        1. Pressure 30.07 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point41°F
        5. Humidity 64%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KSIY Station History
        Almanac for September 17, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 67°F 78°F 89°F 1991
        4. Low 39°F 44°F 34°F 2019
        5. Rain/Snow Depth
        6. Precipitation 0.12 in - in -
        7. Snow 0 in - in -
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 77°F 78°F 90°F
        4. Low 39°F 44°F 31°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:51 AM 7:14 PM
        3. Civil Twilight 6:24 AM 7:42 PM
        4. Nautical Twilight 5:51 AM 8:14PM
        5. Astronomical Twilight 5:18 AM 8:48 PM
        1. Length of Visible Light 13h 18m
        2. Length of Day 12h 22m
        3. Tomorrow will be 2 minutes 44 seconds shorter
        1. Moon 2:00 PM 10:37 PM
        2. Waxing Crescent40% 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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