Mill Valley, CA Weather - Forecast & Monthly Averages

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TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Mill Valley for September is 63.6 degrees
The lowest monthly average temperature in Mill Valley for January is 49.6 degrees
The most monthly precipitation in Mill Valley occurs in December with 4.1 inches
The air quality index in Mill Valley is 5% better than the national average
The pollution index in Mill Valley is 202% worse than the national average

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Mill Valley 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	41°F	59°F	50°F	2.8"
February	45°F	62°F	53°F	3.1"
March	47°F	65°F	55°F	2.9"
April	49°F	67°F	57°F	1.8"
May	52°F	69°F	59°F	0.4"
June	54°F	72°F	62°F	0.3"
July	56°F	73°F	63°F	0.0"
August	57°F	73°F	63°F	0.0"
September	55°F	76°F	64°F	0.1"
October	52°F	73°F	61°F	1.0"
November	47°F	65°F	56°F	1.9"
December	42°F	59°F	50°F	4.1"

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Mill Valley 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	Mill Valley	California	National
Air quality index	40	55	42
Pollution index	8,232,360	10,473,190	2,726,193

Mill Valley 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 Mill Valley temperature with heat index

Mill Valley monthly precipitation with daily maximum

Mill Valley monthly snow depth with daily maximum

Mill Valley monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Point Reyes Station, CA	215	34	32.0%
Daly City, CA	111,327	40	20.0%
Alto, CA	841	40	20.0%
Kentfield, CA	7,687	40	20.0%
Sausalito, CA	7,331	40	20.0%
Mill Valley, CA	14,823	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Piney Green, NC	14,825	37	26.0%
Mountain Home, ID	14,826	36	28.0%
Morris, IL	14,819	0	100.0%
Midlothian, IL	14,817	55	10.0%
Fraser, MI	14,815	56	12.0%
Mill Valley, CA	14,823	40	20.0%

Source: The Mill Valley, 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.