Early autumn · Weather & things to do
White Mountains in September
White Mountains cools off: highs slip to 50°F (10°C), from 56°F in August, with lows of 30°F (-1°C) and about 3.6 in (91 mm) of rain.
It scores 61/100 for comfort, 3rd of 12, which makes it a solid shoulder-season month.
- Avg high
- 50°F (10°C)
- Avg low
- 30°F (-1°C)
- Rain
- 3.6 in (91 mm)
- Humidity
- 83%
- Cloud cover
- 56%
- Daylight
- ~12 h 17 min
- Comfort score
- 61/100 · Good
What September feels like
It's cool, with highs near 50°F (10°C), so a proper jacket stays on most of the day.
Nights drop below freezing, with an average low of 30°F (-1°C), so expect frost and ice.
Some rain is likely, about 3.6 in (91 mm) in the month, so pack for a shower or two.
Plan around September
September is shoulder season: good weather, a step below the best months (July & August).
- Freezing nights return: average lows drop to 30°F.
- Comfort slips from 68/100 in August to 61/100.
- Our Stowe, Woodstock & the White Mountains route recommends Dec – Mar, so September falls outside its suggested window.
What to pack for September
- Insulated jackethighs only 50°F
- Hat, gloves and thermal base layerslows around 30°F
- Shoes with gripfrost and ice are possible
- Packable rain jacket or umbrellaabout 3.6 in of rain
- Comfortable walking shoesmost picks involve some walking
What to do in White Mountains in September
With conditions on your side, the picks below favor time outside.
Jackson XC
Nonprofit cross-country ski center with a large groomed trail network running right through Jackson village.
Why now September scores 61/100 for comfort, good conditions for being outside.
Wildcat Mountain
Ski area in Pinkham Notch with direct views across to Mount Washington and Tuckerman Ravine.
Why now Highs near 50°F and 3.6 in of monthly rain make this an easy outdoor pick.
Honeymoon Bridge
Red 1876 covered bridge over the Ellis River that serves as the entrance to Jackson village.
Why now One to do outside while the weather is on your side.
Crawford Notch State Park
Steep mountain pass carrying US-302 between granite walls, with frozen waterfalls and snowshoe trails in winter.
Moat Mountain Smoke House & Brewing
Brewpub on the main road into North Conway, serving smoked barbecue with its own beers.
Nearby in September
- Vermont in September~66 mi · highs 69°F, 3.6 in rain · 11°C (19°F) warmer by day, about as wet
- Portland, Maine in September~67 mi · highs 65°F, 3.8 in rain · 8°C (15°F) warmer by day, about as wet
- Stowe in September~70 mi · highs 69°F, 3.6 in rain · 11°C (19°F) warmer by day, about as wet
- Woodstock in September~75 mi · highs 71°F, 3.6 in rain · 12°C (21°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~488 m to White Mountains's ~1,891 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
White Mountains in September: quick answers
Is September a good time to visit White Mountains?
It's a good shoulder-season choice, scoring 61/100 against a best of 69 in July & August. Expect highs of 50°F (10°C) and 3.6 in (91 mm) of rain. Our Stowe, Woodstock & the White Mountains route recommends Dec – Mar, so September is outside its suggested window.
How cold is White Mountains in September?
Average highs are 50°F (10°C) and average lows 30°F (-1°C), making it the 4th-warmest month by daytime highs, with nights below freezing on average.
Does it rain a lot in White Mountains in September?
Some: about 3.6 in (91 mm) of rain falls across September on average, the 4th-driest month of the year. The annual total is about 47.3 in (1201 mm).
What should I pack for White Mountains in September?
Bring insulated jacket (highs only 50°F), hat, gloves and thermal base layers (lows around 30°F), shoes with grip (frost and ice are possible), packable rain jacket or umbrella (about 3.6 in of rain) and comfortable walking shoes (most picks involve some walking).
More on White Mountains
Planning White Mountains in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.