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      Heat Advisory
      until 10:00 PM PDT
      +1 more alert
      Elev 212 ft, 37.972 °N 122.539 °W

      San Rafael, CA

      Gerstle Park Top of Reservoir Rd. Station81°
      Updated: 12:25 AM PDT on September 10, 2026 (GMT -7)
      7 minutes ago
      75°
      67°
      81
      Feels Like 80
      Clear
      N
      0
      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
        Tonight
        Thu 09/10
        Low 66°f
         1% Precip. / 0 in
        Clear skies. Low 66F. Winds light and variable.
        Tomorrow
        Fri 09/11
        High 89°f
         1% Precip. / 0 in
        Partly cloudy skies. High 89F. Winds WSW at 10 to 15 mph.
        Tomorrow night
        Fri 09/11
        Low 55°f
         19% Precip. / 0 in
        Mostly clear skies. Low near 55F. Winds W at 5 to 10 mph.
        Hourly Forecast
        Now
        80°
        1AM
        78°
        2AM
        76°
        3AM
        74°
        4AM
        70°
        5AM
        69°
        6AM
        68°
        6:48AM
        Sunrise
        7AM
        67°
        8AM
        69°
        9AM
        73°
        10AM
        77°
        11AM
        80°
        12PM
        83°
        1PM
        85°
        2PM
        87°
        3PM
        87°
        4PM
        86°
        5PM
        84°
        6PM
        81°
        7PM
        76°
        7:25PM
        Sunset
        8PM
        73°
        9PM
        70°
        10PM
        67°
        11PM
        65°
        12AM
        63°
        Precipitation
        4%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        41
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.96 in
        2. Visibility 9 miles
        3. Clouds Clear
        4. Dew Point50°F
        5. Humidity 36%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KJMC Station History
        Almanac for September 10, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 75°F 83°F 101°F 2015
        4. Low 67°F 53°F 39°F 1928
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.4 in -
        7. Snow 0 in 0 in -
        Almanac for September 11, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 99°F 83°F 100°F
        4. Low 67°F 53°F 39°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:47 AM 7:25 PM
        3. Civil Twilight 6:21 AM 7:52 PM
        4. Nautical Twilight 5:49 AM 8:23PM
        5. Astronomical Twilight 5:17 AM 8:55 PM
        1. Length of Visible Light 13h 30m
        2. Length of Day 12h 37m
        3. Tomorrow will be 2 minutes 24 seconds shorter
        1. Moon 6:16 AM 7:11 PM
        2. New0% of the Moon is Illuminated
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Precipitation
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