Average annual temperature is 11.6 °C
Absolute maximum temperature: 39.8 °C
Absolute minimum temperature: -12.7 °C
Number of sunny days: 260 days
Number of rainy days: 75 days
Number of snow days: 30 days
Look at detailed online map of Marietta
* Weather data for Marietta 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) | 3.9 | 9.7 | 9.8 | 27.6 | 29.7 | 31.9 | 39.8 | 35.2 | 31.0 | 26.3 | 21.5 | 12.3 |
| Average daytime temperature (°C) | 0.0 | 2.9 | 4.3 | 17.5 | 22.9 | 25.6 | 35.3 | 30.9 | 26.3 | 20.4 | 12.5 | 9.4 |
| Average temperature (°C) | -3.2 | -1.5 | -0.2 | 10.4 | 16.8 | 19.2 | 28.8 | 24.3 | 19.7 | 13.5 | 6.5 | 4.0 |
| Average night temperature (°C) | -6.1 | -5.3 | -3.6 | 4.2 | 10.3 | 12.9 | 21.1 | 17.4 | 13.2 | 7.5 | 1.2 | -0.2 |
| Absolute minimum temperature (°C) | -12.7 | -12.0 | -10.9 | -5.6 | 2.4 | 6.7 | 17.9 | 12.7 | 6.5 | -3.1 | -5.8 | -5.3 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 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) | 6.7 | 8.8 | 9.7 | 11.9 | 12.8 | 13.1 | 13.4 | 11.9 | 11.3 | 10.0 | 8.9 | 7.9 |
| Precipitation (mm) | 91 | 50 | 54 | 1 | 21 | 21 | 1 | 51 | 8 | 6 | 2 | 1 |
| Sunny days | 15 | 20 | 17 | 27 | 12 | 15 | 28 | 24 | 22 | 27 | 26 | 27 |
| Rainy days | 5 | 1 | 7 | 0 | 19 | 15 | 3 | 7 | 8 | 4 | 3 | 3 |
| Snow days | 11 | 7 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Marietta during the most sunny months:
The largest precipitation sum in Marietta is at