Sierra City, CA Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Sierra City for July is 70.9 degrees
The lowest monthly average temperature in Sierra City for December is 39.2 degrees
The most monthly precipitation in Sierra City occurs in December with 11.7 inches
The air quality index in Sierra City is 5% worse than the national average
The pollution index in Sierra City is 878% worse than the national average

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Sierra City 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	35°F	49°F	41°F	7.8"
February	35°F	47°F	40°F	8.4"
March	36°F	49°F	41°F	10.1"
April	38°F	54°F	45°F	5.7"
May	46°F	62°F	53°F	3.7"
June	55°F	71°F	62°F	1.4"
July	64°F	79°F	71°F	0.1"
August	63°F	79°F	70°F	0.1"
September	58°F	74°F	65°F	1.4"
October	48°F	63°F	54°F	4.8"
November	40°F	53°F	46°F	7.3"
December	34°F	46°F	39°F	11.7"

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Sierra City 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	Sierra City	California	National
Air quality index	44	55	42
Pollution index	26,667,300	10,473,190	2,726,193

Sierra City air quality

Measurement	Total
Days measured	361
Days with good air quality	273
Days with moderate air quality	83
Days w/ poor A.Q. for sensitive groups	5
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.360%
Benzene	0.250%
Carbon Tetrachloride	0.100%
Lead	0.250%
Mercury	0.260%

Average monthly Sierra City temperature with heat index

Sierra City monthly precipitation with daily maximum

Sierra City monthly snow depth with daily maximum

Sierra City monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Downieville, CA	99	44	12.0%
Sattley, CA	73	44	12.0%
Clio, CA	184	44	12.0%
Iron Horse, CA	290	44	12.0%
Whitehawk, CA	37	44	12.0%
Sierra City, CA	84	44	12.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Blue Springs, AL	84	35	30.0%
Graham, AL	84	38	24.0%
Moccasin, AZ	84	44	12.0%
Joes, CO	84	58	16.0%
Douds, IA	84	29	42.0%
Sierra City, CA	84	44	12.0%

Source: The Sierra City, 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.