The best time to see the fall foliage in Oklahoma is during the last week of October and the first week of November.
At TravelOK.com, Best Bets for Oklahoma Fall Foliage, they said,
The magical autumn season conjures visions of warm sweaters, crisp air and the vibrant hues of fall foliage. Discover six foliage drives in Oklahoma where you can watch the landscape explode with vivid autumn colors as you venture down winding roads chasing the breathtaking scenery beyond.
As the lush, green Oklahoma leaves transform into shades of brilliant gold and striking crimson, visitors to Oklahoma rejoice in the state’s plentiful fall foliage areas and viewing opportunities. Known for its lengthy fall color season, Oklahoma offers prime foliage well into November. As the temperatures turn cool with the upcoming promise of winter, fall is the ideal time to venture out into the great outdoors on an autumn adventure across the Sooner State. Fuel up the car, keep cabin fever at bay and don’t forget to pack your favorite camera. The invitation is here for the taking. Come along on a fall foliage frolic throughout Oklahoma and explore the beauty of the season firsthand.
I agree.
Not in Oklahoma? The folks at Farmer’s Almanac have published a list of fall foliage dates by state.