Yountville, CA Weather - Forecast & Monthly Averages

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TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Yountville for July is 64.6 degrees
The lowest monthly average temperature in Yountville for December is 46.6 degrees
The most monthly precipitation in Yountville occurs in January with 3.8 inches
The air quality index in Yountville is 17% better than the national average
The pollution index in Yountville is 190% worse than the national average

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Yountville 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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Yountville 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	Yountville	California	National
Air quality index	35	55	42
Pollution index	7,898,290	10,473,190	2,726,193

Yountville air quality

Measurement	Total
Days measured	363
Days with good air quality	330
Days with moderate air quality	31
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.260%
Benzene	0.080%
Carbon Tetrachloride	0.005%
Lead	0.240%
Mercury	0.270%

Average monthly Yountville temperature with heat index

Yountville monthly precipitation with daily maximum

Yountville monthly snow depth with daily maximum

Yountville monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Angwin, CA	3,415	34	32.0%
Kenwood, CA	540	34	32.0%
St. Helena, CA	6,049	34	32.0%
Calistoga, CA	5,346	34	32.0%
Petaluma, CA	60,865	34	32.0%
Yountville, CA	3,001	35	30.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Epping, NH	3,001	37	26.0%
Tonkawa, OK	3,000	40	20.0%
Fairview CDP (Westchester County), NY	2,999	36	28.0%
Mendenhall, MS	3,003	44	12.0%
Shark River Hills, NJ	3,003	51	2.0%
Yountville, CA	3,001	35	30.0%

Source: The Yountville, 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.