Alpharetta weather in September (Georgia, United States of America)

Looking to travel to Alpharetta in September? Here's what the weather might have in store during this month.

In Alpharetta the weather in September is generally perfect, with high temperatures and moderate rainfall. Throughout the day, temperatures typically settle at around 82°F (show in °C). But by evening, they drop to around 62°F.

Alpharetta in September usually receives moderate rainfall, averaging around 3.6 inches (show in mm) for the month. Delving into the climate records from the past 30 years, one can predict that nearly 8 days of the month will see rainfall.

With around 227 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Alpharetta. April, May, September and October typically offer the best circumstances. While January, February and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Alpharetta climate page with graphs.


Alpharetta, monthly averages in September

Show in Celsius
Min Temperature 62.2°F  
Max Temperature 82.4°F  
Chance of Rain 27%  
Precipitation 3.6 inches  
Rainy days 8 days  
Humidity 74% *  
Sunshine 227 hours *  
Percentage Sunshine 61% *  
* Data from: Atlanta, the United States of America (37 KM, 23 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So, what should you wear in Alpharetta in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Outdoor sports

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Alpharetta.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.