Los Altos, California Weather
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Weather Forecast for Los Altos, California : Los Angeles County
Issued: 3:05 am PDT Sep 16, 2025 Latitude: 33.7939057 Longitude: -118.1253437 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Morning Fog on Today Increasing Clouds on Tonight Mostly Cloudy on Wednesday 60% chance of thunderstorms on Thursday 30% chance of thunderstorms on Friday Morning Fog on Saturday Patchy Fog on Sunday Patchy Fog on Monday
High: 86°F Low: 70°F High: 84°F High: 84°F High: 81°F High: 81°F High: 82°F High: 85°F
Low: 71°F Low: 69°F Low: 67°F Low: 67°F Low: 68°F  
Morning Fog Increasing Clouds Mostly Cloudy Thunderstorms Thunderstorms Morning Fog Patchy Fog Patchy Fog
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Current Conditions at
LONG BEACH - (KLGB)
66°
Cloudy
Mist
as of 5:53 AM PDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 2 1/2 Miles
Pressure: 29.90 in.
Flight Rule: IFR
Wind Data
3 MPH
310° Northwest
Cloud Level(s): Solid Overcast at 600ft
Current Conditions at
FULLERTON - (KFUL)
66°
Clear
Mist
as of 5:53 AM PDST
Rel. Humidity: 88%
Dew Point: 63°F
Visibility: 4 Miles
Pressure: 29.90 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
HAWTHORNE - (KHHR)
66°
Cloudy
Mist
as of 6:20 AM PDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 4 Miles
Pressure: 29.92 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 600ft
Morning Fog on Today Today... Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 70. West wind 5 to 10 mph becoming light northwest in the evening.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 84. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
40% chance of thunderstorms Wednesday Night Wednesday Night... A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 71. West wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
60% chance of thunderstorms Thursday Thursday... Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 84. South southwest wind 5 to 10 mph becoming east northeast in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
40% chance of thunderstorms Thursday Night Thursday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
30% chance of thunderstorms Friday Friday... A 30 percent chance of showers and thunderstorms, mainly before 11am. Partly sunny, with a high near 81.
Patchy Fog on Friday Night Friday Night... Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 67.
Morning Fog on Saturday Saturday... Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81.
Patchy Fog on Saturday Night Saturday Night... Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 67.
Patchy Fog on Sunday Sunday... Patchy fog. Otherwise, mostly sunny, with a high near 82.
Patchy Fog on Sunday Night Sunday Night... Patchy fog. Otherwise, mostly cloudy, with a low around 68.
Patchy Fog on Monday Monday... Patchy fog. Otherwise, mostly sunny, with a high near 85.
Current Radar Image


Sun Almanac for Los Altos, California
Sunrise: 06:37 AM
Sunset: 6:57 PM
Civil Sunrise:06:12 AM
Civil Sunset: 7:22 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 7:52 PM
Astro Sunrise: 05:13 AM
Astro Sunset: 8:21 PM
California's Current Temperatures
California's Current Temperature Map

California's Satellite ImageCalifornia Satellite Image

California's Current Wind DirectionCalifornia's Current Wind Direction

National Summary
of upper and lower values of current conditions amongst 7256 locations
in the contiguous United States
High
Temp		 86° Lantana/Palm Bea, Florida
and 4 other locations
Low
Temp		 30° Afton, Wyoming
and 3 other locations
Wind
Speed		 140mph Cherry Pt Mcas, North Carolina
Wind
Gust		 38mph Ocean City, Maryland
and 1 other location
Wind
Chill		 28° Kemmerer, Wyoming
and 1 other location
Heat
Index		 94° Miami, Florida
and 1 other location
High
Pressure		 30.72Hg Salida Mountain, Colorado
Low
Pressure		 29.82Hg Thermal, California
and 1 other location
# Locations Reporting Rain 41
# Locations Reporting Thunderstorms / Lightning 6
# Locations Reporting Fog 25
Average Temperature in the Contiguous USA 65°
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