San Juan Capistrano, CA Weather - Forecast & Monthly Averages

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TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in San Juan Capistrano for August is 72.2 degrees
The lowest monthly average temperature in San Juan Capistrano for December is 57 degrees
The most monthly precipitation in San Juan Capistrano occurs in December with 2.4 inches
The air quality index in San Juan Capistrano is 111% worse than the national average
The pollution index in San Juan Capistrano is 1521% worse than the national average

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San Juan Capistrano 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	48°F	69°F	57°F	2.3"
February	49°F	69°F	58°F	1.9"
March	52°F	70°F	60°F	0.9"
April	54°F	72°F	62°F	0.6"
May	59°F	73°F	65°F	0.3"
June	62°F	76°F	67°F	0.0"
July	66°F	80°F	71°F	0.1"
August	66°F	82°F	72°F	0.0"
September	65°F	82°F	72°F	0.2"
October	60°F	79°F	68°F	0.5"
November	54°F	75°F	63°F	0.7"
December	48°F	68°F	57°F	2.4"

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San Juan Capistrano 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	San Juan Capistrano	California	National
Air quality index	89	55	42
Pollution index	44,192,600	10,473,190	2,726,193

San Juan Capistrano air quality

Measurement	Total
Days measured	365
Days with good air quality	42
Days with moderate air quality	178
Days w/ poor A.Q. for sensitive groups	79
Days with unhealthy air quality	58

Air quality details

Pollutant	Total
Arsenic	0.030%
Benzene	0.280%
Carbon Tetrachloride	0.001%
Lead	0.220%
Mercury	0.140%

Average monthly San Juan Capistrano temperature with heat index

San Juan Capistrano monthly precipitation with daily maximum

San Juan Capistrano monthly snow depth with daily maximum

San Juan Capistrano monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Dana Point, CA	33,782	89	78.0%
San Clemente, CA	64,929	89	78.0%
Costa Mesa, CA	112,958	89	78.0%
Las Flores, CA	5,089	89	78.0%
Ladera Ranch, CA	24,996	89	78.0%
San Juan Capistrano, CA	35,976	89	78.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Panama City, FL	35,952	38	24.0%
Manchester, CT	35,946	41	18.0%
Marion, OH	36,011	41	18.0%
Franklin, WI	36,013	44	12.0%
West Kelowna, BC	36,030	n/a
San Juan Capistrano, CA	35,976	89	78.0%

Source: The San Juan Capistrano, 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.