Field notes · 2026 estimate
When to see peak color at Harriman State Park
Peak fall color is predicted around October 21. Plan for the strongest viewing window from October 16 to October 26.
Predicted peakOctober 21
Best windowOctober 16 – October 26
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 Orange County and across New York.
That is 1 day earlier than usual (October 22): the six weeks to October 11 ran 1.0°F cooler than the 2001–2025 average, and a cooler run before peak brings forward the color.
Nearby locales