FallPeak season ~74°F highs

Things to do in Lebanon in September

September is one of the best months to visit Lebanon, with average highs around 74°F. Crisp air and changing leaves make parks and viewpoints shine.

Plan a September weekend Where else in September

Best picks for September

What's famous here, weighted toward what shines in September.

1Foliage walks

Dartmouth Green

grass-covered field and common space at the center of Dartmouth College

Saint-Gaudens National Historical Park

house and garden of American sculptor Augustus Saint-Gaudens

3Fall colors

Balch Hill

Holidays in September 2027

Labour Day · Mon, Sep 6

Expect busier roads and pricier stays around these dates. See long weekends.

Also great in September in New Hampshire

Manchester Meredith Berlin Keene

Lebanon in September: quick answers

Is September a good time to visit Lebanon?

September is one of the best months to visit Lebanon, with average highs around 74°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Lebanon in September?

Average daytime highs are around 74°F, compared with 82°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.

What are the best things to do in Lebanon in September?

Top picks for September: Dartmouth Green, Saint-Gaudens National Historical Park, Balch Hill, Arrowhead Recreation Area, Winslow State Park.