TODAY DEC12
TEMPERATURE59
HUMIDITY90
PRESSURE
WIND COND.153
  • 5847Fri40%40%
  • 5542Sat20%20%
  • 5440Sun
  • 5441Mon
  • 5344Tue
daynightWeather update from DW7094 Mill Valley at
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Ross 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
January36°F58°F47°F3.8"
February39°F62°F50°F3.4"
March41°F66°F52°F3.0"
April42°F69°F55°F1.6"
May46°F74°F59°F0.5"
June50°F80°F64°F0.3"
July53°F81°F65°F0.0"
August53°F80°F64°F0.0"
September49°F82°F64°F0.1"
October45°F76°F59°F1.3"
November40°F66°F52°F1.8"
December36°F58°F47°F3.8"

Did you know?

  • The highest monthly average temperature in Ross for July is 65 degrees.
  • The lowest monthly average temperature in Ross for December is 47 degrees.
  • The most monthly precipitation in Ross occurs in January with 3.8 inches.
  • The air quality index in Ross is 14% better than the national average.
  • The pollution index in Ross is 62% worse than the national average.

Compare Ross, CA Weather To Other Cities

Ross 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.
IndexRossCaliforniaNational
Air quality index435550
Pollution index8,232,36018,106,7265,066,862

Ross air quality information

MeasurementTotal
Days measured365
Days with good air quality241
Days with moderate air quality115
Days w/ poor A.Q. for sensitive groups9
Days with unhealthy air quality

Ross air quality information

PollutantTotal
Arsenic0.010%
Benzene0.060%
Carbon Tetrachloride0.000%
Lead0.010%
Mercury0.010%

Average monthly Ross temperature with heat index

Ross monthly precipitation with daily maximum

Ross monthly snow depth with daily maximum

Ross monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Point Reyes Station, CA5743530%
Berkeley, CA118,5854314%
East Richmond Heights, CA3,3644314%
Fairfax, CA7,5984314%
Larkspur, CA12,2684314%
Ross, CA2,3814314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Cabool, MO2,3813922%
Winneconne, WI2,3823824%
Clay, PA2,3794510%
Kentwood, LA2,3792844%
Old Orchard, PA2,378476%
Ross, CA2,3814314%
Source: The Ross, 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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