October Mountain State Forest
Forest · Massachusetts
Massachusetts' largest state forest spreads across 16,500 acres of the Berkshires above Lee and Washington, its name reportedly coined by Herman Melville for the mountain's autumn color; old woods roads and trails wind through miles of turning hardwood.
Don’t miss
Peak: October 11–October 15
Color builds from September 28 · mostly bare by November 3
Method: daily ERA5 temperatures drive a photoperiod + chilling phenology model, sampled at October Mountain State Forest’s own coordinates and elevation (610 m) rather than a regional average. Estimates, not promises — check locally before you plan a trip around it.
October Mountain State Forest on the map
More things to do in Massachusetts
Boston Public Garden
GardenPeak October 23
America's first public botanical garden colors gently through late October, with weeping willows around the lagoon, ginkgos and maples over the promenades, and the Common's big oaks and elms right across Charles Street.
Don’t miss: Lagoon willows · Commonwealth Avenue Mall next door
Arnold Arboretum
ArboretumPeak October 23
Harvard's 281-acre living museum in Jamaica Plain holds one of North America's great tree collections (maples, hickories, ginkgos, and conifer-framed hillsides), usually at its best from mid-October to early November.
Don’t miss: Maple collection · Peters Hill view of the skyline
Mount Auburn Cemetery
Garden cemeteryPeak October 23
America's first garden cemetery is quietly one of Greater Boston's best foliage walks: 175 acres of century-old sugar maples, beeches, and oaks over Victorian monuments, with a tower view back to the Boston skyline.
Don’t miss: Washington Tower view · Auburn Lake dell
Middlesex Fells Reservation
State parkPeak October 22
Twenty-five hundred acres of rocky oak-and-hickory woodland just north of the city. The Skyline Trail's ledges open over reservoirs ringed in October color, close enough to reach on the Orange Line.
Don’t miss: Skyline Trail ledges · Wright's Tower
Plan from a city
Frequently asked
- When does October Mountain State Forest peak in 2026?
- Peak color is predicted for October 11–October 15 (best estimate October 13). Color starts around September 28 and is mostly bare by November 3.
- What is October Mountain State Forest best for?
- Quiet Berkshires forest hiking.
- How do I get to October Mountain State Forest?
- The closest city is Hartford, about 50 mi away. It's part of Massachusetts's fall lineup.
Own or manage October Mountain State Forest? Update your listing or get in touch.