45750 Weather (Marietta, OH)

Weather forecast for: Marietta OH

Last Update: 7:48 am EDT Sep 3, 2026

Today: Mostly sunny, with a high near 94. Heat index values as high as 102. West wind 3 to 6 mph.

Tonight: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Calm wind.

Friday: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming west around 6 mph in the afternoon.

Friday Night: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday: Sunny, with a high near 82.

Sunday Night: Mostly clear, with a low around 61.

Labor Day: Mostly sunny, with a high near 84.

Monday Night: Partly cloudy, with a low around 63.

Tuesday: Mostly sunny, with a high near 85.

Tuesday Night: Partly cloudy, with a low around 66.

Wednesday: Mostly sunny, with a high near 88.