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The weather in Alpharetta in August is hot. The average temperatures are between 21°C and 32°C.
You can expect about 3 to 8 days of rain in Alpharetta during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Alpharetta in August 2025.
If you’re planning to visit Alpharetta in the near future, we highly recommend that you review the 14 day weather forecast for Alpharetta before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 2° | 7 | 22 | 2 | 93 mm | Awful | Alpharetta in January |
| February | 12° / 4° | 6 | 20 | 2 | 109 mm | Bad | Alpharetta in February |
| March | 17° / 7° | 7 | 23 | 1 | 111 mm | Ok | Alpharetta in March |
| April | 22° / 11° | 5 | 25 | 0 | 122 mm | Good | Alpharetta in April |
| May | 27° / 16° | 7 | 24 | 0 | 144 mm | Good | Alpharetta in May |
| June | 31° / 20° | 6 | 24 | 0 | 124 mm | Good | Alpharetta in June |
| July | 32° / 22° | 7 | 24 | 0 | 154 mm | Ok | Alpharetta in July |
| August | 32° / 21° | 7 | 24 | 0 | 155 mm | Ok | Alpharetta in August |
| September | 29° / 19° | 5 | 25 | 0 | 119 mm | Good | Alpharetta in September |
| October | 23° / 13° | 4 | 27 | 0 | 76 mm | Perfect | Alpharetta in October |
| November | 16° / 7° | 4 | 25 | 0 | 90 mm | Good | Alpharetta in November |
| December | 12° / 5° | 6 | 23 | 2 | 112 mm | Bad | Alpharetta in December |