Grayson, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grayson, a town in Okmulgee County, Oklahoma.
This Afternoon
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. South wind around 5 mph.
7-day forecast for Grayson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Sunny | 5 mph S | 0% |
| Tonight | 72°F | Mostly Clear | 5 mph S | 0% |
| Saturday | 99°F | Sunny | 5 to 10 mph S | 1% |
| Saturday Night | 73°F | Partly Cloudy | 5 to 10 mph S | 3% |
| Sunday | 97°F | Chance Showers And Thunderstorms | 5 mph S | 45% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph SW | 66% |
| Monday | 89°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 62% |
| Monday Night | 63°F | Partly Cloudy | 5 mph N | 9% |
| Tuesday | 85°F | Mostly Sunny | 5 to 10 mph N | 10% |
| Tuesday Night | 60°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 86°F | Mostly Sunny | 5 mph NE | 9% |
| Wednesday Night | 61°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Thursday | 87°F | Mostly Sunny | 0 to 5 mph NE | 8% |
| Thursday Night | 63°F | Partly Cloudy | 0 mph | 5% |
Forecast source: National Weather Service (api.weather.gov) for Grayson (35.505, -95.872). Updated through the day.
Growing snapshot for Grayson
Last spring frost
Apr 8
First fall frost
Oct 28
Growing season
203 days
Hardiness zone
7b
More local growing data for Grayson: nearby ZIP 74431 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Okmulgee Wtr Wks, Ok (12.5 mi from Grayson). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.