Alto, California Weather
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Weather Forecast for Alto, California : Marin County
Issued: 5:01 am PDT Sep 16, 2025 Latitude: 37.9043701 Longitude: -122.5255306 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on Today Clear on Tonight Sunny on Wednesday Partly Sunny on Thursday 20% chance of on Friday Mostly Sunny on Saturday Sunny on Sunday Sunny on Monday
High: 89°F Low: 58°F High: 91°F High: 77°F High: 77°F High: 80°F High: 83°F High: 86°F
Low: 57°F Low: 58°F Low: 58°F Low: 57°F Low: 58°F  
Sunny Clear Sunny Partly Sunny Partly Sunny Mostly Sunny Sunny Sunny
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Current Conditions at
SAN FRANCISCO - (KSFO)
61°
Clear
as of 3:56 AM PDST
Rel. Humidity: 87%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
7 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
OAKLAND - (KOAK)
61°
Clear
as of 3:53 AM PDST
Rel. Humidity: 93%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
3 MPH
350° North
Cloud Level(s): Clear
Current Conditions at
NAPA - (KAPC)
57°
Clear
as of 3:54 AM PDST
Rel. Humidity: 87%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CONCORD - (KCCR)
64°
Clear
as of 3:53 AM PDST
Rel. Humidity: 67%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 89. Calm wind.
Clear on Tonight Tonight... Clear, with a low around 58. Calm wind.
Sunny on Wednesday Wednesday... Sunny, with a high near 91. Light west southwest wind.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 57. Calm wind.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 77. Calm wind becoming southwest around 6 mph in the afternoon.
20% chance of rain Thursday Night Thursday Night... A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 58. New precipitation amounts of less than a tenth of an inch possible.
20% chance of Friday Friday... A 20 percent chance of showers before 11am. Partly sunny, with a high near 77.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 58.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 80.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 57.
Sunny on Sunday Sunday... Sunny, with a high near 83.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 58.
Sunny on Monday Monday... Sunny, with a high near 86.
Current Radar Image


Sun Almanac for Alto, California
Sunrise: 06:53 AM
Sunset: 7:16 PM
Civil Sunrise:06:27 AM
Civil Sunset: 7:42 PM
Nautical Sunrise: 05:56 AM
Nautical Sunset: 8:13 PM
Astro Sunrise: 05:25 AM
Astro Sunset: 8:45 PM
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