Alpharetta, GA Weather - Forecast & Monthly Averages

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TEMPERATURE	66
HUMIDITY	64
PRESSURE	101760.98
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Alpharetta for July is 79.3 degrees
The lowest monthly average temperature in Alpharetta for January is 42.7 degrees
The most monthly precipitation in Alpharetta occurs in December with 5.1 inches
The air quality index in Alpharetta is 24% worse than the national average
The pollution index in Alpharetta is 396% worse than the national average

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Alpharetta 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	33°F	54°F	43°F	4.1"
February	35°F	57°F	45°F	4.0"
March	43°F	67°F	54°F	4.2"
April	51°F	75°F	63°F	4.1"
May	59°F	82°F	70°F	3.8"
June	67°F	90°F	78°F	3.6"
July	70°F	91°F	79°F	3.9"
August	70°F	90°F	79°F	4.7"
September	64°F	84°F	73°F	4.6"
October	51°F	75°F	62°F	3.4"
November	40°F	65°F	52°F	3.5"
December	38°F	58°F	47°F	5.1"

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Alpharetta 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	Alpharetta	Georgia	National
Air quality index	52	41	42
Pollution index	13,513,500	1,874,972	2,726,193

Alpharetta air quality

Measurement	Total
Days measured	365
Days with good air quality	162
Days with moderate air quality	184
Days w/ poor A.Q. for sensitive groups	18
Days with unhealthy air quality	1

Air quality details

Pollutant	Total
Arsenic	0.170%
Benzene	0.180%
Carbon Tetrachloride	0.040%
Lead	0.080%
Mercury	0.005%

Average monthly Alpharetta temperature with heat index

Alpharetta monthly precipitation with daily maximum

Alpharetta monthly snow depth with daily maximum

Alpharetta monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Cumming, GA	6,747	37	26.0%
Sugar Hill, GA	24,637	37	26.0%
Suwanee, GA	21,257	37	26.0%
Roswell, GA	98,234	52	4.0%
Sandy Springs, GA	111,012	52	4.0%
Alpharetta, GA	69,031	52	4.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
South San Francisco, CA	68,998	40	20.0%
Portland, ME	68,956	40	20.0%
Mount Vernon, NY	69,130	51	2.0%
Johnson City, TN	69,135	45	10.0%
Rocklin, CA	69,145	52	4.0%
Alpharetta, GA	69,031	52	4.0%

Source: The Alpharetta, GA 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.