Average annual temperature is 13.3 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -8.8 °C
Number of sunny days: 172 days
Number of rainy days: 187 days
Number of snow days: 6 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) | 16.8 | 22.6 | 24.0 | 28.7 | 29.5 | 33.3 | 33.1 | 31.8 | 32.8 | 28.4 | 21.4 | 18.2 |
| Average daytime temperature (°C) | 9.1 | 12.8 | 12.6 | 19.7 | 22.6 | 27.0 | 29.7 | 27.9 | 25.6 | 19.7 | 13.0 | 10.0 |
| Average temperature (°C) | 4.4 | 6.0 | 6.3 | 12.7 | 16.3 | 20.6 | 24.0 | 22.5 | 19.8 | 14.3 | 7.2 | 5.4 |
| Average night temperature (°C) | 1.1 | 1.3 | 1.6 | 6.9 | 10.8 | 15.1 | 19.5 | 17.9 | 15.2 | 10.3 | 2.9 | 2.2 |
| Absolute minimum temperature (°C) | -6.0 | -8.8 | -7.3 | 0.9 | 2.9 | 9.8 | 16.0 | 12.2 | 10.2 | 3.3 | -6.3 | -4.7 |
| 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 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 3.7 | 6.9 | 7.3 | 8.9 | 10.0 | 11.0 | 11.3 | 11.0 | 9.5 | 7.6 | 7.2 | 5.0 |
| Precipitation (mm) | 126 | 88 | 114 | 85 | 91 | 103 | 90 | 86 | 36 | 77 | 43 | 94 |
| Sunny days | 8 | 15 | 17 | 16 | 16 | 14 | 7 | 14 | 15 | 16 | 20 | 14 |
| Rainy days | 21 | 12 | 13 | 14 | 15 | 16 | 24 | 17 | 15 | 15 | 9 | 16 |
| Snow days | 2 | 1 | 1 | 0 | 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