TODAY DEC08
TEMPERATURE59
HUMIDITY81
PRESSURE30.02
WIND COND.320 8.1
  • 5943Mon
  • 5844Tue
  • 6044Wed
  • 6346Thu
  • 6347Fri
daynightWeather update from San Jose, San Jose International Airport at
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Sunnyvale Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January42°F61°F50°F2.4"
February45°F63°F53°F2.4"
March47°F67°F56°F2.0"
April49°F70°F58°F1.3"
May53°F73°F61°F0.3"
June56°F77°F65°F0.2"
July59°F78°F67°F0.0"
August59°F78°F66°F0.0"
September57°F80°F67°F0.1"
October53°F75°F63°F0.7"
November47°F67°F56°F1.3"
December42°F60°F51°F2.6"

Did you know?

  • The highest monthly average temperature in Sunnyvale for July is 67 degrees.
  • The lowest monthly average temperature in Sunnyvale for January is 50 degrees.
  • The most monthly precipitation in Sunnyvale occurs in December with 2.6 inches.
  • The air quality index in Sunnyvale is 3% better than the national average.
  • The pollution index in Sunnyvale is 127% worse than the national average.

Compare Sunnyvale, CA Weather To Other Cities

Sunnyvale air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexSunnyvaleCaliforniaNational
Air quality index485550
Pollution index11,477,20018,106,7265,066,862

Sunnyvale air quality information

MeasurementTotal
Days measured365
Days with good air quality204
Days with moderate air quality153
Days w/ poor A.Q. for sensitive groups7
Days with unhealthy air quality1

Sunnyvale air quality information

PollutantTotal
Arsenic0.070%
Benzene0.110%
Carbon Tetrachloride0.000%
Lead0.160%
Mercury0.090%

Average monthly Sunnyvale temperature with heat index

Sunnyvale monthly precipitation with daily maximum

Sunnyvale monthly snow depth with daily maximum

Sunnyvale monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Loma Mar, CA1503628%
Cambrian Park, CA3,259484%
East Palo Alto, CA29,353484%
Fruitdale, CA868484%
Los Altos, CA30,238484%
Sunnyvale, CA149,596484%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Rockford, IL149,5973138%
Kansas City, KS149,7555816%
Lakewood, CO149,793548%
Escondido, CA149,9126122%
Hollywood, FL148,1144118%
Sunnyvale, CA149,596484%
Source: The Sunnyvale, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.
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