Sunnyvale, California Weather
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Weather Forecast for Sunnyvale, California : Santa Clara County
Issued: 1:26 pm PDT Sep 15, 2025 Latitude: 37.3688301 Longitude: -122.0363496 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Tonight Sunny on Tuesday Sunny on Wednesday 20% chance of on Thursday 20% chance of thunderstorms on Friday 10% chance of rain on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday
Low: 63°F High: 89°F High: 87°F High: 79°F High: 80°F High: 79°F High: 78°F High: 81°F
Low: 63°F Low: 62°F Low: 63°F Low: 62°F Low: 62°F Low: 61°F  
Mostly Clear Sunny Sunny Partly Sunny Thunderstorms Rain Mostly Sunny Mostly Sunny
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Current Conditions at
MOUNTAIN VIEW NAS - (KNUQ)
72°
Clear
as of 10:10 PM PDST
Rel. Humidity: 64%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SAN JOSE INTL - (KSJC)
73°
Clear
as of 9:53 PM PDST
Rel. Humidity: 56%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
3 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
SAN JOSE REID - (KRHV)
75°
Clear
as of 9:55 PM PDST
Rel. Humidity: 53%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 63. Calm wind.
Sunny on Tuesday Tuesday... Sunny, with a high near 89. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Clear on Tuesday Night Tuesday Night... Clear, with a low around 63. Northwest wind 5 to 9 mph becoming calm in the evening.
Sunny on Wednesday Wednesday... Sunny, with a high near 87. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 62. West northwest wind 5 to 9 mph becoming calm in the evening.
20% chance of Thursday Thursday... A 20 percent chance of showers after 11am. Partly sunny, with a high near 79.
30% chance of thunderstorms Thursday Night Thursday Night... A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
20% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms before 11am, then a slight chance of showers. Mostly sunny, with a high near 80.
10% chance of rain Friday Night Friday Night... A slight chance of showers after 11pm. Partly cloudy, with a low around 62.
10% chance of rain Saturday Saturday... A slight chance of showers before 11am. Mostly sunny, with a high near 79.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 62.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 78.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 61.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 81.
Current Radar Image


Sun Almanac for Sunnyvale, California
Sunrise: 06:52 AM
Sunset: 7:14 PM
Civil Sunrise:06:25 AM
Civil Sunset: 7:40 PM
Nautical Sunrise: 05:55 AM
Nautical Sunset: 8:11 PM
Astro Sunrise: 05:23 AM
Astro Sunset: 8:42 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.