Harman US

Copan, OK Weather & Growing Conditions

Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. South wind around 10 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 99°F Sunny 10 mph S 0%
Tonight 74°F Mostly Clear 5 to 10 mph SE 3%
Wednesday 99°F Partly Sunny 5 to 10 mph S 7%
Wednesday Night 73°F Slight Chance Showers And Thunderstorms 5 to 10 mph SE 18%
Thursday 97°F Mostly Sunny then Slight Chance Showers And Thunderstorms 5 mph S 22%
Thursday Night 72°F Chance Showers And Thunderstorms 5 mph E 55%
Friday 94°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 5 to 10 mph SE 55%
Friday Night 72°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 5 to 10 mph S 3%
Sunday 98°F Sunny 5 to 10 mph S 2%
Sunday Night 75°F Clear 10 mph S 0%
Monday 98°F Sunny 10 to 15 mph S 1%
Monday Night 76°F Mostly Clear 10 mph S 1%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Copan, OK

Last spring frost
Apr 12
First fall frost
Oct 21
Growing season
192 days
Hardiness zone
7a

Explore more for Copan, OK: full frost dates · planting calendar · Oklahoma frost dates

Climate data from the nearest NOAA station, Bartlesville F P Fld, Ok (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.