Cornish, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cornish, a town in Jefferson County, Oklahoma.
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. Heat index values as high as 98. South southeast wind 6 to 9 mph.
7-day forecast for Cornish
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 6 to 9 mph SSE | 0% |
| Saturday | 101°F | Sunny | 7 to 10 mph SSW | 1% |
| Saturday Night | 74°F | Mostly Clear | 7 to 10 mph S | 8% |
| Sunday | 100°F | Mostly Sunny then Chance Showers And Thunderstorms | 9 mph S | 50% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 8 mph SSE | 68% |
| Monday | 93°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 7 mph NE | 52% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms | 7 mph NE | 17% |
| Tuesday | 89°F | Slight Chance Rain Showers then Mostly Sunny | 7 to 10 mph NE | 16% |
| Tuesday Night | 63°F | Partly Cloudy | 6 to 9 mph NE | 5% |
| Wednesday | 90°F | Mostly Sunny | 7 mph ENE | 10% |
| Wednesday Night | 64°F | Partly Cloudy | 7 mph ENE | 5% |
| Thursday | 92°F | Slight Chance Rain Showers | 7 mph E | 15% |
| Thursday Night | 65°F | Partly Cloudy | 7 mph ENE | 7% |
| Friday | 92°F | Partly Sunny | 7 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov) for Cornish (34.164, -97.596). Updated through the day.
Growing snapshot for Cornish
Last spring frost
Mar 23
First fall frost
Nov 7
Growing season
226 days
Hardiness zone
8a
More local growing data for Cornish: nearby ZIP 73456 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ringling 1N Mesonet, Ok (6.1 mi from Cornish). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.