Copan, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Copan, a town in Washington County, Oklahoma.
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. South wind 5 to 10 mph.
7-day forecast for Copan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 74°F | Mostly Clear | 5 to 10 mph SE | 3% |
| Wednesday | 100°F | Partly Sunny | 5 to 10 mph S | 7% |
| Wednesday Night | 73°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SE | 17% |
| Thursday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 22% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 5 mph E | 55% |
| Friday | 95°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph S | 55% |
| Friday Night | 73°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph SE | 15% |
| Saturday | 97°F | Slight Chance Showers And Thunderstorms then Sunny | 5 to 10 mph S | 15% |
| Saturday Night | 74°F | Clear | 10 mph S | 3% |
| Sunday | 98°F | Sunny | 10 to 15 mph S | 2% |
| Sunday Night | 75°F | Clear | 10 mph S | 0% |
| Monday | 99°F | Sunny | 10 to 15 mph S | 1% |
| Monday Night | 76°F | Mostly Clear | 10 to 15 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Copan (36.900, -95.925). Updated through the day.
Growing snapshot for Copan
Last spring frost
Apr 12
First fall frost
Oct 21
Growing season
192 days
Hardiness zone
7a
More local growing data for Copan: nearby ZIP 74022 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bartlesville F P Fld, Ok (11.2 mi from Copan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.