Average annual temperature is 15.0 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: -7.3 °C
Number of sunny days: 179 days
Number of rainy days: 183 days
Number of snow days: 3 days
Look at detailed online map of Alphoretta
* Weather data for Alphoretta United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 20.4 | 25.8 | 25.9 | 29.3 | 29.0 | 32.1 | 37.8 | 35.1 | 33.7 | 30.5 | 26.3 | 20.3 |
| Average daytime temperature (°C) | 12.4 | 15.0 | 15.7 | 21.6 | 24.3 | 27.7 | 32.6 | 29.8 | 27.6 | 22.1 | 16.2 | 12.6 |
| Average temperature (°C) | 6.7 | 8.6 | 8.8 | 14.3 | 17.8 | 21.4 | 25.9 | 23.9 | 21.1 | 15.9 | 9.2 | 6.6 |
| Average night temperature (°C) | 3.0 | 3.7 | 3.5 | 8.2 | 12.0 | 15.7 | 20.4 | 19.1 | 15.7 | 10.8 | 4.2 | 2.5 |
| Absolute minimum temperature (°C) | -6.1 | -7.3 | -6.2 | 0.7 | 4.0 | 9.7 | 16.0 | 13.3 | 11.6 | 3.2 | -5.8 | -5.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.9 | 7.1 | 7.7 | 9.8 | 10.3 | 11.2 | 11.6 | 10.1 | 9.9 | 8.0 | 7.4 | 5.8 |
| Precipitation (mm) | 110 | 97 | 87 | 63 | 60 | 51 | 75 | 142 | 65 | 46 | 45 | 101 |
| Sunny days | 11 | 13 | 19 | 19 | 14 | 16 | 6 | 11 | 17 | 18 | 21 | 14 |
| Rainy days | 19 | 14 | 11 | 11 | 17 | 14 | 25 | 20 | 13 | 13 | 9 | 17 |
| Snow days | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Alphoretta during the most sunny months:
The largest precipitation sum in Alphoretta is at