Average annual temperature is 14.9 °C
Absolute maximum temperature: 39.9 °C
Absolute minimum temperature: -9.2 °C
Number of sunny days: 253 days
Number of rainy days: 101 days
Number of snow days: 11 days
Look at detailed online map of Suwanee
* Weather data for Suwanee 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) | 13.4 | 17.3 | 22.7 | 30.5 | 31.7 | 36.7 | 39.9 | 38.0 | 35.5 | 29.5 | 25.5 | 16.6 |
| Average daytime temperature (°C) | 7.3 | 10.5 | 14.8 | 22.5 | 27.0 | 32.0 | 37.1 | 33.0 | 30.0 | 24.1 | 14.9 | 8.5 |
| Average temperature (°C) | 1.8 | 3.2 | 7.6 | 14.1 | 19.7 | 24.6 | 30.2 | 26.1 | 22.9 | 16.6 | 8.3 | 3.0 |
| Average night temperature (°C) | -2.3 | -2.2 | 1.5 | 5.6 | 12.1 | 16.2 | 22.3 | 19.3 | 15.5 | 9.5 | 2.5 | -1.2 |
| Absolute minimum temperature (°C) | -8.5 | -9.2 | -4.2 | -4.6 | 8.8 | 11.8 | 17.5 | 15.9 | 11.7 | -1.3 | -4.9 | -6.3 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 8.2 | 8.8 | 9.3 | 11.7 | 12.3 | 13.0 | 12.9 | 11.5 | 11.0 | 10.2 | 8.9 | 8.1 |
| Precipitation (mm) | 18 | 19 | 19 | 2 | 30 | 10 | 2 | 42 | 24 | 4 | 20 | 46 |
| Sunny days | 22 | 18 | 20 | 26 | 12 | 23 | 23 | 16 | 20 | 27 | 21 | 25 |
| Rainy days | 4 | 7 | 9 | 4 | 19 | 7 | 8 | 15 | 10 | 4 | 9 | 5 |
| Snow days | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Suwanee is at