Marietta, OH Weather & Climate Normals
Marietta's real weather, in one number
Marietta, OH scores 56/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 6 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Marietta's hottest and coldest months
Marietta's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 32°F, a 42.7°F swing across the year, a middling gap by national standards.
Rain and snow in Marietta
Over a typical year, Marietta sees about 42.51in of precipitation a year across roughly 144 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Marietta ranks
Marietta ranks 783 of 4876 US cities in this dataset for comfort score, and 1 of 254 within OH. About 13,039 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from PARKERSBURG WOOD CO AP, WV US, 5.4 miles from Marietta, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is