Marietta, OH
Climate overview — based on NOAA 1991-2020 normals from MARIETTA LOCK 1, OH US.
Year-round temperatures (°F)
Avg high
Avg low
Best time to visit Marietta
Full guide →Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | °F | °F | °F | 3.55 in | 8.7 in | 17 |
| February | °F | °F | °F | 3.12 in | 5.7 in | 14 |
| March | °F | °F | °F | 4.07 in | 2.7 in | 15 |
| April | °F | °F | °F | 3.86 in | 0.1 in | 15 |
| May | °F | °F | °F | 4.05 in | — | 14 |
| June | °F | °F | °F | 4.78 in | — | 13 |
| July | °F | °F | °F | 4.55 in | — | 12 |
| August | °F | °F | °F | 3.65 in | — | 11 |
| September | °F | °F | °F | 3.29 in | — | 10 |
| October | °F | °F | °F | 3.04 in | — | 11 |
| November | °F | °F | °F | 2.89 in | 0.7 in | 12 |
| December | °F | °F | °F | 3.46 in | 3.8 in | 16 |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when