Average annual temperature is 8.7 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: -26.9 °C
Number of sunny days: 215 days
Number of rainy days: 121 days
Number of snow days: 29 days
Look at detailed online map of City of Marietta
* Weather data for City of 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) | 2.0 | 5.0 | 3.8 | 26.2 | 32.0 | 34.1 | 36.0 | 36.1 | 36.8 | 32.6 | 16.6 | 12.0 |
| Average daytime temperature (°C) | -5.0 | -2.3 | -1.4 | 10.4 | 24.0 | 29.4 | 28.5 | 28.7 | 26.0 | 15.2 | 8.7 | 4.8 |
| Average temperature (°C) | -8.3 | -7.6 | -5.8 | 4.2 | 17.4 | 23.7 | 22.6 | 22.8 | 20.1 | 10.4 | 3.1 | 0.3 |
| Average night temperature (°C) | -11.3 | -12.3 | -9.6 | -0.5 | 11.3 | 17.9 | 17.0 | 17.8 | 14.9 | 6.5 | -1.2 | -3.1 |
| Absolute minimum temperature (°C) | -24.7 | -26.9 | -19.1 | -10.7 | 1.5 | 12.0 | 11.7 | 13.1 | 8.2 | -5.0 | -11.2 | -9.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.8 | 7.1 | 7.3 | 9.3 | 11.8 | 13.1 | 12.8 | 11.5 | 9.8 | 7.5 | 6.9 | 4.7 |
| Precipitation (mm) | 22 | 51 | 52 | 64 | 59 | 62 | 26 | 72 | 60 | 107 | 5 | 80 |
| Sunny days | 20 | 19 | 18 | 14 | 18 | 14 | 18 | 18 | 16 | 18 | 23 | 19 |
| Rainy days | 2 | 4 | 4 | 14 | 13 | 16 | 13 | 13 | 14 | 12 | 6 | 10 |
| Snow days | 9 | 5 | 9 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
The best time to visit City of Marietta during the most sunny months:
Months with the longest average daylight duration in City of Marietta:
The largest precipitation sum in City of Marietta is at