Arrowhead, San Bernardino, CA Weather - Forecast & Monthly Averages

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Weather Quick Facts

The highest monthly average temperature in Arrowhead for August is 77.8 degrees
The lowest monthly average temperature in Arrowhead for December is 55.1 degrees
The most monthly precipitation in Arrowhead occurs in December with 1.9 inches
The air quality index in Arrowhead is 111% worse than the national average
The pollution index in Arrowhead is 1058% worse than the national average

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Arrowhead 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	44°F	70°F	56°F	1.6"
February	45°F	72°F	57°F	1.2"
March	47°F	75°F	60°F	0.7"
April	50°F	78°F	63°F	0.5"
May	55°F	82°F	66°F	0.2"
June	59°F	89°F	72°F	0.0"
July	65°F	94°F	77°F	0.2"
August	65°F	95°F	78°F	0.1"
September	63°F	94°F	76°F	0.2"
October	56°F	85°F	69°F	0.2"
November	49°F	77°F	62°F	0.5"
December	44°F	69°F	55°F	1.9"

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Arrowhead 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	Arrowhead	San Bernardino	California
Air quality index	89	89	55
Pollution index	31,575,300	31,575,300	10,473,190

Arrowhead 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	0.110%
Benzene	0.260%
Carbon Tetrachloride	0.020%
Lead	0.350%
Mercury	0.280%

Average monthly Arrowhead temperature with heat index

Arrowhead monthly precipitation with daily maximum

Arrowhead monthly snow depth with daily maximum

Arrowhead monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Calimesa, CA	9,156	89	78.0%
Jurupa Valley, CA	106,646	89	78.0%
Riverside, CA	327,569	89	78.0%
Highland, CA	55,339	89	78.0%
Running Springs, CA	4,410	89	78.0%
San Bernardino, CA	216,784	89	78.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Tacoma, WA	215,766	18	64.0%
Des Moines, IA	215,408	39	22.0%
Richmond Hill, ON	215,407	n/a
Spring Valley, NV	218,697	54	8.0%
Enterprise, NV	214,591	54	8.0%
San Bernardino, CA	216,784	89	78.0%

Source: The Arrowhead, San Bernardino, 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.