Keystone Ancient Forest
Centuries-old cedars and tall post oaks that turn warm autumn tones.
Forest Composition
Conditions & 5-Day Forecast
Field notes · 2026 estimate
When to see peak color at Keystone Ancient Forest
Peak fall color is predicted around November 7. Plan for the strongest viewing window from November 2 to November 12.
- Predicted peak
- November 7
- Best window
- November 2 – November 12
- Confidence range
- ±5 days
The prediction comes from 14 years of fall color records at this spot, checked against what observers on the ground saw. Where state foliage spotters report peak (New York, Pennsylvania, Wisconsin and Missouri), it has landed inside our ±5-day window about two years in three. An unusual summer or autumn can still move it further. Explore fall color around Osage County and across Oklahoma.
That is 5 days later than usual (November 2): the six weeks to October 24 ran 5.9°F warmer than the 2001–2025 average, and a warmer run before peak delays the color. This will settle about ten days before peak, as the weather comes in.
Nearby locales
Other places to see color near Keystone Ancient Forest
1 to 2 hours
- Osage Hills State Park60 mi · 1 hr 22 minPeak: Oct 27Status: Moderate color
- Sequoyah State Park67 mi · 1 hr 29 minPeak: Nov 1Status: Early color
- Highway 10 (Gore to Tenkiller Lake)83 mi · 1 hr 42 minPeak: Nov 3Status: Moderate color
- Cherokee Hills Byway85 mi · 1 hr 45 minPeak: Oct 27
- Natural Falls State Park94 mi · 1 hr 47 minPeak: Oct 31Status: Early color
- Arcadia Lake103 mi · 1 hr 53 minPeak: Nov 4Status: Moderate color
- Martin Park Nature Center109 mi · 1 hr 59 minPeak: Nov 5Status: Moderate color