Climate and monthly weather forecast
Alpharetta, GA

Weather in January

January, like December, is another chilly winter month in Alpharetta, Georgia, with an average temperature ranging between min 33.6°F (0.9°C) and max 49.1°F (9.5°C). January is the coldest month, with an average high-temperature of 49.1°F (9.5°C) and an average low-temperature of 33.6°F (0.9°C). Weather in January »

Weather in February

The last month of the winter, February, is a fresh month in Alpharetta, Georgia, with an average temperature fluctuating between 54.1°F (12.3°C) and 37.8°F (3.2°C). In Alpharetta, the average high-temperature in February is essentially the same as in January - a cool 54.1°F (12.3°C). Weather in February »

Weather in March

The first month of the spring, March, is an enjoyable month in Alpharetta, Georgia, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 61.9°F (16.6°C). In March, the average high-temperature slightly increases from a fresh 54.1°F (12.3°C) in February to an enjoyable 61.9°F (16.6°C). Weather in March »

Weather in April

April in Alpharetta, Georgia, is a pleasant spring month, with temperature in the range of an average high of 71.4°F (21.9°C) and an average low of 52.3°F (11.3°C). In April, the average high-temperature increases from a comfortable 61.9°F (16.6°C) in March to an agreeable 71.4°F (21.9°C). Weather in April »

Weather in May

May, the last month of the spring in Alpharetta, is a warm month, with an average temperature ranging between max 79.5°F (26.4°C) and min 60.4°F (15.8°C). In Alpharetta, the average high-temperature in May marginally rises from an agreeable 71.4°F (21.9°C) in April to a warm 79.5°F (26.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Alpharetta, Georgia, with temperature in the range of an average high of 87.1°F (30.6°C) and an average low of 67.5°F (19.7°C). In June, the average high-temperature marginally rises from a warm 79.5°F (26.4°C) in May to a hot 87.1°F (30.6°C). Weather in June »

Weather in July

July, the same as June, in Alpharetta, Georgia, is another hot summer month, with an average temperature ranging between max 90°F (32.2°C) and min 70.3°F (21.3°C). With an average high-temperature of 90°F (32.2°C) and an average low-temperature of 70.3°F (21.3°C), July is the warmest month. In July, the average heat index is computed to be a scorching 105.1°F (40.6°C). Weather in July »

Weather in August

August, the last month of the summer in Alpharetta, is another tropical month, with an average temperature ranging between min 70°F (21.1°C) and max 88.7°F (31.5°C). In August, the average high-temperature is relatively the same as in July - a still tropical 88.7°F (31.5°C). Weather in August »

Weather in September

September, the first month of the autumn in Alpharetta, is also a moderately hot month, with an average temperature varying between 64.8°F (18.2°C) and 83.5°F (28.6°C). In Alpharetta, Georgia, the average high-temperature in September is almost the same as in August - a moderately hot 83.5°F (28.6°C). Weather in September »

Weather in October

October, the same as September, in Alpharetta, Georgia, is another pleasant autumn month, with an average temperature ranging between min 52.7°F (11.5°C) and max 72°F (22.2°C). In October, the average high-temperature decreases from a warm 83.5°F (28.6°C) in September to an agreeable 72°F (22.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Alpharetta, Georgia, with an average temperature ranging between max 60.1°F (15.6°C) and min 42.8°F (6°C). In November, the average high-temperature decreases from an agreeable 72°F (22.2°C) in October to a mild 60.1°F (15.6°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Alpharetta, Georgia, with an average temperature fluctuating between 53.1°F (11.7°C) and 38.7°F (3.7°C). In December, the average high-temperature marginally drops from a moderate 60.1°F (15.6°C) in November to a fresh 53.1°F (11.7°C). Weather in December »
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FAQ

What is the coldest month in Alpharetta?

With an average high-temperature of 49.1°F (9.5°C) and an average low-temperature of 33.6°F (0.9°C), January is the coldest month.

How many days does it rain in Alpharetta?

In Alpharetta, Georgia, during the entire year, the rain falls for 158.7 days and collects up to 26.06" (662mm) of precipitation.

When does it snow in Alpharetta?

Months with snowfall in Alpharetta are January through March, November and December.

What is the snowiest month in Alpharetta?

January is the month with the most snowfall in Alpharetta, Georgia. Snow falls for 1.3 days and accumulates 0.71" (18mm) of snow.

How many days does it snow in Alpharetta?

In Alpharetta, Georgia, during the entire year, snow falls for 4.1 days and aggregates up to 1.77" (45mm) of snow.

When is the lowest UV index in Alpharetta?

The months with the lowest UV index in Alpharetta are January and December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST) in Alpharetta?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Alpharetta?

In Alpharetta, snow does not fall in April through October.

What are the months with the highest UV index in Alpharetta?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Alpharetta.

When are the longest days in Alpharetta?

June has the longest days of the year, with an average of 14h and 23min of daylight.

What is the warmest month in Alpharetta?

With an average high-temperature of 90°F (32.2°C) and an average low-temperature of 70.3°F (21.3°C), July is the warmest month in Alpharetta, Georgia.

What are the least humid months in Alpharetta?

July and August, with an average relative humidity of 69%, are the least humid months in Alpharetta.

What month has the most sunshine in Alpharetta?

July has the most sunshine of the year in Alpharetta, Georgia, with an average of 10.6h of sunshine.

What is the rainiest month in Alpharetta?

August is the month with the most rainfall in Alpharetta, Georgia. Rain falls for 18.1 days and accumulates 3.58" (91mm) of precipitation.

What is the driest month in Alpharetta?

October is the month with the least rainfall in Alpharetta. Rain falls for 9 days and accumulates 1.34" (34mm) of precipitation.

What is the most humid month in Alpharetta?

December is the most humid month in Alpharetta, with an average relative humidity of 78%.

What is the month with the shortest days in Alpharetta?

The month with the shortest days is December, with an average of 9h and 56min of daylight.

What is the month with the least sunshine in Alpharetta?

With an average of 5.1h of sunshine, December has the least sunshine of the year.

Average temperature
Alpharetta, GA

Average temperature - Alpharetta, GA

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (49.1°F).

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).

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Average pressure
Alpharetta, GA

Average pressure - Alpharetta, GA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed
Alpharetta, GA

Average wind speed - Alpharetta, GA

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity
Alpharetta, GA

Average humidity - Alpharetta, GA

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are July and August (69%).

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Average rainfall
Alpharetta, GA

Average rainfall - Alpharetta, GA

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is October (1.34").

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Average rainfall days
Alpharetta, GA

Average rainfall days - Alpharetta, GA

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is October (9 days).

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Average snowfall
Alpharetta, GA

Average snowfall - Alpharetta, GA

The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Alpharetta, GA

Average snowfall days - Alpharetta, GA

The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Alpharetta, GA

Average daylight / Average sunshine - Alpharetta, GA

The month with the longest days is June (Average daylight: 14h and 23min).
The month with the shortest days is December (Average daylight: 9h and 56min).

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days
Alpharetta, GA

Average sunshine days - Alpharetta, GA

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10.1 days).

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Average UV index
Alpharetta, GA

Average UV index - Alpharetta, GA

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average visibility
Alpharetta, GA

Average visibility - Alpharetta, GA

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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