Copan, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Copan, a town in Washington County, Oklahoma.
Tonight
74°F
Mostly Clear
Mostly clear, with a low around 74. South wind 5 to 10 mph.
7-day forecast for Copan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 74°F | Mostly Clear | 5 to 10 mph S | 1% |
| Saturday | 99°F | Sunny | 5 to 15 mph S | 2% |
| Saturday Night | 72°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph S | 40% |
| Sunday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 68% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 5 mph NE | 68% |
| Monday | 83°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 51% |
| Monday Night | 59°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Tuesday | 79°F | Mostly Sunny | 10 mph NE | 5% |
| Tuesday Night | 56°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Wednesday | 80°F | Mostly Sunny | 5 mph NE | 5% |
| Wednesday Night | 59°F | Partly Cloudy | 5 mph NE | 6% |
| Thursday | 81°F | Chance Rain Showers | 5 mph NE | 25% |
| Thursday Night | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph NE | 15% |
| Friday | 81°F | Slight Chance Rain Showers | 5 mph E | 16% |
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 Sep 19, 2026.