Fairfax, CA Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Fairfax for July is 64.6 degrees
The lowest monthly average temperature in Fairfax for December is 46.6 degrees
The most monthly precipitation in Fairfax occurs in January with 3.8 inches
The air quality index in Fairfax is 5% better than the national average
The pollution index in Fairfax is 202% worse than the national average

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Fairfax Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	36°F	58°F	47°F	3.8"
February	39°F	62°F	50°F	3.4"
March	41°F	66°F	52°F	3.0"
April	42°F	69°F	55°F	1.6"
May	46°F	74°F	59°F	0.5"
June	50°F	80°F	64°F	0.3"
July	53°F	81°F	65°F	0.0"
August	53°F	80°F	64°F	0.0"
September	49°F	82°F	64°F	0.1"
October	45°F	76°F	59°F	1.3"
November	40°F	66°F	52°F	1.8"
December	36°F	58°F	47°F	3.8"

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Fairfax 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.
Index	Fairfax	California	National
Air quality index	40	55	42
Pollution index	8,232,360	10,473,190	2,726,193

Fairfax air quality

Measurement	Total
Days measured	365
Days with good air quality	290
Days with moderate air quality	74
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.060%
Carbon Tetrachloride	0.000%
Lead	0.010%
Mercury	0.010%

Average monthly Fairfax temperature with heat index

Fairfax monthly precipitation with daily maximum

Fairfax monthly snow depth with daily maximum

Fairfax monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Point Reyes Station, CA	210	34	32.0%
Marin City, CA	3,040	40	20.0%
Stinson Beach, CA	583	40	20.0%
Tiburon, CA	9,167	40	20.0%
Rollingwood, CA	3,612	40	20.0%
Fairfax, CA	7,629	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
South Weber, UT	7,631	45	10.0%
Ponoka, AB	7,631	n/a
North Weeki Wachee, FL	7,626	30	40.0%
Park City, IL	7,636	39	22.0%
Alta Sierra, CA	7,620	44	12.0%
Fairfax, CA	7,629	40	20.0%

Source: The Fairfax, 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.