Sunnyvale, CA Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Mostly Cloudy with Mist and Fog 45°F
Feels Like 45°F  
Humidity 99% Dew Point 45°F Wind Calm Barometer 29.99 in.
Report from a personal weather station 0.4 mi. SSW of central Sunnyvale
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Point Forecast at a Glance

SatDec 6
Sat Dec 6: Partly Cloudy, Low 44F
 
44
SunDec 7
Sun Dec 7: Mostly Sunny, High 62F, Low 44F
62
44
MonDec 8
Mon Dec 8: Mostly Cloudy, High 63F, Low 46F
63
46
TueDec 9
Tue Dec 9: Mostly Sunny, High 64F, Low 47F
64
47
WedDec 10
Wed Dec 10: Mostly Sunny, High 66F, Low 48F
66
48
ThuDec 11
Thu Dec 11: Mostly Cloudy, High 68F, Low 48F
68
48
FriDec 12
Fri Dec 12: Sunny, High 68F, Low 47F
68
47

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 62°F to 68°F. Dry weather expected throughout the week.

Climate Context

This week's forecast shows temperatures running 6°F above the historical average for December. Normal highs for this period are around 59°F with lows around 41°F.


This Date in Weather History

1988 - An outbreak of cold arctic air brought up to 18 inches of snow to the Colorado Rockies, with 14 inches at Boulder CO, and seven inches at Denver. Heavy snow blanketed New Mexico the following day, with 15 inches reported near Ruidoso.

More on this and other weather history


Sunnyvale, CA 7 Day Weather Forecast Details

Saturday Dec 6

Partly Cloudy

Night: Partly cloudy, with a low around 44. Calm wind.

Sunday Dec 7

Mostly Sunny

Day: Mostly sunny, with a high near 62. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

Mostly Clear

Night: Mostly clear, with a low around 44. Light west northwest wind.

Monday Dec 8

Mostly Cloudy

Day: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63. Calm wind becoming north northwest around 6 mph in the afternoon.

Partly Cloudy

Night: Patchy fog between 1am and 2am. Otherwise, partly cloudy, with a low around 46. Light north northwest wind.

Tuesday Dec 9

Mostly Sunny

Day: Mostly sunny, with a high near 64.

Partly Cloudy

Night: Partly cloudy, with a low around 47.

Wednesday Dec 10

Mostly Sunny

Day: Mostly sunny, with a high near 66.

Mostly Clear

Night: Mostly clear, with a low around 48.

Thursday Dec 11

Mostly Cloudy

Day: Patchy fog before 9am. Otherwise, sunny, with a high near 68.

Mostly Clear

Night: Mostly clear, with a low around 48.

Friday Dec 12

Sunny

Day: Sunny, with a high near 68.

Mostly Clear

Night: Mostly clear, with a low around 47.

Saturday Dec 13

Mostly Sunny

Day: Mostly sunny, with a high near 67.


About Sunnyvale, CA

Sunnyvale () is a city located in the Santa Clara Valley in northwestern Santa Clara County, California, United States. Sunnyvale lies along the historic El Camino Real and Highway 101 and is bordered by portions of San Jose to the north, Moffett Federal Airfield and NASA Ames Research Center to the northwest, Mountain View to the northwest, Los Altos to the southwest, Cupertino to the south, and Santa Clara to the east. Sunnyvale's population was 155,805 at the 2020 census, making it the second most populous city in the county (after San Jose) and the seventh most populous city in the San Francisco Bay Area. As one of the major cities that make up California's high-tech area known as Silicon Valley, Sunnyvale is the birthplace of the video game industry, former location of Atari headquarters. Many technology companies are headquartered in Sunnyvale and many more operate there, including several aerospace/defense companies. Sunnyvale was also the home to Onizuka Air Force Station, often referred to as "the Blue Cube" because of the color and shape of its windowless main building. The facility, previously known as Sunnyvale Air Force Station, was named for the deceased Space Shuttle Challenger astronaut Ellison Onizuka. It served as an artificial satellite control facility of the U.S. military until August 2010 and has since been decommissioned and demolished. Sunnyvale is one of the few municipalities in California to have a single unified Department of Public Safety, where all personnel are trained as firefighters, police officers, and EMTs, so that they can respond to an emergency in any of the three roles.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.