Alta Sierra, CA Weather Forecast & Monthly Average Temperatures

TEMPERATURE	86
HUMIDITY	18
PRESSURE	30.01
WIND COND.

Alta Sierra Average Weather

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	38°F	57°F	47°F	10.1"
February	41°F	62°F	51°F	8.0"
March	44°F	67°F	55°F	8.4"
April	46°F	74°F	59°F	4.6"
May	53°F	83°F	68°F	2.6"
June	58°F	91°F	75°F	2.6"
July	62°F	96°F	79°F	0.2"
August	60°F	95°F	77°F	0.4"
September	57°F	90°F	73°F	1.3"
October	50°F	79°F	63°F	4.8"
November	43°F	65°F	53°F	7.5"
December	37°F	56°F	46°F	9.8"

Did you know?

The highest monthly average temperature in Alta Sierra for July is 79 degrees.
The lowest monthly average temperature in Alta Sierra for December is 46 degrees.
The most monthly precipitation in Alta Sierra occurs in January with 10.1 inches.
The air quality index in Alta Sierra is 15% better than the national average.
The pollution index in Alta Sierra is 15% better than the national average.

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Alta Sierra 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	Alta Sierra	California	National
Air quality index	42	55	50
Pollution index	4,289,310	18,106,726	5,066,862

Alta Sierra air quality information

Measurement	Total
Days measured	365
Days with good air quality	262
Days with moderate air quality	103
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Alta Sierra air quality information

Pollutant	Total
Arsenic	0.050%
Benzene	0.070%
Carbon Tetrachloride	0.001%
Lead	0.060%
Mercury	0.010%

Average monthly Alta Sierra temperature with heat index

Alta Sierra monthly precipitation with daily maximum

Alta Sierra monthly snow depth with daily maximum

Alta Sierra monthly wind speed information

Nearby cities with good air quality

City, State	Population	Air Quality Index	National Avg.
Colfax, CA	2,189	42	16%
Grass Valley, CA	12,861	42	16%
Nevada City, CA	3,117	42	16%
Smartsville, CA	142	42	16%
Lake of the Pines, CA	3,936	42	16%
Alta Sierra, CA	6,639	42	16%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Belfast, ME	6,641	35	30%
Opp, AL	6,635	33	34%
Montevallo, AL	6,633	50	= 100
Oneonta, AL	6,645	35	30%
Twin Lakes, CO	6,645	54	8%
Alta Sierra, CA	6,639	42	16%

Source: The Alta Sierra, 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.