Alpharetta, GA Climate


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United States / Georgia / Atlanta-Sandy Springs-Alpharetta Metro Area / Fulton County / Alpharetta / Zip Codes
Alpharetta, GA has a humid subtropical climate with hot and humid summers and mild winters. The average summer temperature is around 86°F (30°C), while the average winter temperature is around 48°F (8.9°C). The city receives an average of 50 inches (127 cm) of rain each year, primarily concentrated from May through September. Alpharetta also experiences occasional snowfall in winter months, but it usually melts quickly due to the warm weather. Overall, the climate in Alpharetta is mild and pleasant most of the year.

Alpharetta, Georgia gets 53 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Alpharetta averages 2 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 218 sunny days per year in Alpharetta. The US average is 205 sunny days.

Alpharetta gets some kind of precipitation, on average, 108 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 88 degrees
Winter Low: the January low is 30
Rain: averages 53 inches of rain a year
Snow: averages 2 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Alpharetta is 7.6 (10=best), which means it is one of the most pleasant places in Georgia.

7.2 Summer - 6.6 Winter
May, September and October are the most pleasant months in Alpharetta, while January and December are the least comfortable months.

  ClimateAlpharetta, GeorgiaUnited States
  53.4 in.38.1 in.
  1.6 in.27.8 in.
  108.0 days106.2 days
  218 days205 days
  87.9°85.8°
  30.0°21.7°
  7.67
  5.14.3
  1135 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Alpharetta with an average high temperature of 87.9°, which ranks it as cooler than most places in Georgia. In Alpharetta, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Alpharetta are May, September and October.
In Alpharetta, there are 27.3 days annually when the high temperature is over 90°, which is cooler than most places in Georgia.
January has the coldest nighttime temperatures for Alpharetta with an average of 30.0°. This is colder than most places in Georgia.
In Alpharetta, there are 64.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Georgia.
In Alpharetta, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Georgia.
Humidity in Alpharetta can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, August and June. The humid season runs from June-September and the most comfortable months are October-May.
March is the wettest month in Alpharetta with 5.1 inches of rain, and the driest month is April with 3.8 inches. The wettest season is Spring with 27% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 53.4 inches in Alpharetta means that it is wetter than most places in Georgia.
January is the rainiest month in Alpharetta with 10.5 days of rain, and October is the driest month with only 6.8 rainy days. There are 108.0 rainy days annually in Alpharetta, which is rainier than most places in Georgia. The rainiest season is Spring when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.
An annual snowfall of 1.6 inches in Alpharetta means that it is snowier than most places in Georgia. January is the snowiest month in Alpharetta with 0.7 inches of snow, and 1 month of the year have significant snowfall.
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Mary · Johns Creek, GA
Great city to live
Over 5 years ago

I have lived in Alpharetta for almost 6 years. Great city, professional residents, high end neighborhoods, and of course beautiful shopping centers. The example is  More

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Kim · Johns Creek, GA
Meh.
Over 5 years ago

I’ve lived in Alpharetta for 13y. I was initially excited and open-minded about living in the South. (We are from Chicago). The traffic is terrible. Urban planning  More

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Sue · Alpharetta, GA
Alpharetta, GA
Over 7 years ago

I live work and play in Alpharetta, GA. The standard of living is excellent. Housing is high end and affordable. Schools are highly rated. Amenities are top notch and  More

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