Marietta, OK Weather & Growing Conditions
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. Heat index values as high as 97. South wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 8 mph S | 0% |
| Saturday | 100°F | Sunny | 7 to 12 mph SSW | 0% |
| Saturday Night | 74°F | Mostly Clear | 8 to 12 mph S | 3% |
| Sunday | 99°F | Mostly Sunny then Chance Showers And Thunderstorms | 10 mph S | 40% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 8 mph SSE | 60% |
| Monday | 94°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 2 to 7 mph NNE | 60% |
| Monday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph NE | 17% |
| Tuesday | 90°F | Mostly Sunny | 7 to 10 mph NE | 12% |
| Tuesday Night | 64°F | Partly Cloudy | 6 to 9 mph NE | 5% |
| Wednesday | 90°F | Mostly Sunny | 8 mph ENE | 8% |
| Wednesday Night | 65°F | Partly Cloudy | 7 mph ENE | 3% |
| Thursday | 91°F | Mostly Sunny | 7 mph E | 11% |
| Thursday Night | 66°F | Partly Cloudy | 6 mph ENE | 7% |
| Friday | 91°F | Mostly Sunny | 5 to 8 mph E | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marietta, OK
Last spring frost
Apr 6
First fall frost
Nov 2
Growing season
211 days
Hardiness zone
8a
Explore more for Marietta, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Marietta 5Sw, Ok (6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.