Marietta, OH Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Marietta, a city in Washington County, Ohio.

Tonight

60°F

Partly Cloudy then Patchy Fog

Patchy fog after 4am. Partly cloudy, with a low around 60. North wind 2 to 6 mph.

7-day forecast for Marietta

When	Temp	Forecast	Wind	Precip
Tonight	60°F	Partly Cloudy then Patchy Fog	2 to 6 mph N	0%
Saturday	84°F	Areas Of Fog then Mostly Sunny	2 mph E	3%
Saturday Night	67°F	Partly Cloudy then Chance Showers And Thunderstorms	0 to 5 mph SE	64%
Sunday	83°F	Showers And Thunderstorms	7 mph SW	85%
Sunday Night	64°F	Showers And Thunderstorms	5 mph N	85%
Monday	75°F	Chance Rain Showers	8 mph NE	41%
Monday Night	62°F	Chance Showers And Thunderstorms	5 to 8 mph NE	62%
Tuesday	73°F	Showers And Thunderstorms Likely	8 mph NE	63%
Tuesday Night	60°F	Showers And Thunderstorms Likely	8 to 12 mph NE	72%
Wednesday	70°F	Showers And Thunderstorms Likely	9 mph E	72%
Wednesday Night	57°F	Showers And Thunderstorms Likely	5 to 9 mph E	63%
Thursday	70°F	Chance Rain Showers	6 mph NE	25%
Thursday Night	56°F	Chance Rain Showers then Mostly Cloudy	2 to 6 mph N	25%
Friday	72°F	Partly Sunny then Slight Chance Rain Showers	3 to 7 mph N	15%

Forecast source: National Weather Service (api.weather.gov) for Marietta (39.423, -81.446). Updated through the day.

Growing snapshot for Marietta

Last spring frost

Apr 18

First fall frost

Oct 27

Growing season

191 days

Hardiness zone

More local growing data for Marietta: nearby ZIP 45750 weather · frost dates · planting calendar · Ohio frost dates

Nearby towns & communities

Belpre Beverly Devola Little Hocking Lowell Lower Salem Matamoras (New Matamoras) Newport Vincent Waterford

All Ohio locations ›

Climate data from the nearest NOAA station, Marietta Wwtp, Oh (1.5 mi from Marietta). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.