Copan Weather Forecast

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Last Updated: December 28, 2025

Copan, Oklahoma is a small town located in Washington County, with a population of approximately 750 people.


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Summary

The climate in Copan is characterized by hot summers and cool winters, with average temperatures ranging from 35°F in January to 95°F in July. The town is situated near Copan Lake, which is a reservoir on the Caney River. The lake provides opportunities for fishing, boating, and camping, with several campgrounds and boat ramps available for visitors. Additionally, the area is known for its hunting opportunities, with deer, turkey, and waterfowl being popular game species. The hydrology constituents of Copan include the Caney River and several smaller creeks and tributaries.

       

Weather Forecast

Copan receives approximately 977mm of rain per year, with humidity levels near 81% and air temperatures averaging around 15°C. Copan has a plant hardyness factor of 6, meaning plants and agriculture in this region thrive during a short period during spring and early summer. Most plants will die off during the colder winter months.