The Mount Monroe via Ammonoosuc Ravine is a 6.5-mile out-and-back with 2,751 ft of elevation gain.
6.5 mi • 2,751 ft gain • 3-6 hours • Ammonoosuc Ravine Trailhead (Base Road)
Feels like 40°F
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Today Sep 22 | Tomorrow Sep 23 | Thursday Sep 24 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | cloudy | cloudy | clear | sunny | sunny | clear | sunny | sunny | clear |
| Temp °F hi / lo | 37° 35° | 37° 36° | 38° 36° | 38° 37° | 40° 37° | 42° 40° | 42° 41° | 43° 40° | 46° 44° |
| Chill °F | 29° | 29° | 27° | 27° | 29° | 32° | 33° | 34° | 38° |
| Wind mph | 7 | 9 | 15 | 17 | 13 | 15 | 14 | 10 | 12 |
| Gust mph est. | — | 14 | 24 | 27 | 21 | 24 | 22 | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | - | - | - | - | - | - |
| Freezing ft | 9,136 ft | 10,284 ft | 11,627 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 100% | 1% | 1% | 2% | - | - | - | - |
| Vis mi | clear | clear | clear | clear | clear | clear | clear | clear | clear |
| UV | 4 | 6 | — | 4 | 5 | — | 4 | 5 | — |
Tap a day header to expand AM/PM/Night detail
| Elevation | Today Sep 22 | Tomorrow Sep 23 | Thursday Sep 24 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 5,372 ft | 35/37° 7 | 37/38° 17 | 41/42° 14 |
| 5,000 ft | 35/37° 6 | 37/39° 17 | 40/42° 14 |
| 4,100 ft | 37/39° 7 | 38/40° 18 | 41/43° 13 |
| 3,300 ft | 40/42° 9 | 40/41° 17 | 43/47° 11 |
| 2,500 ft | 42/45° 8 | 42/44° 13 | 45/51° 8 |
| Trailhead 2,000 ft | 43/47° 6 | 43/46° 12 | 45/53° 6 |
4 more days of forecast — plan around the weather window, not just tomorrow.
Full hourly summit forecasts: Mount Monroe weather
Climbs the Ammonoosuc Ravine Trail past waterfalls and steep slabs to the AMC Lakes of the Clouds Hut, then a short climb on the Crawford Path loop to the summit. The upper ravine can hold ice late into spring, and everything above the hut is exposed.
Distance
6.5 mi
Elevation Gain
2,751 ft
Duration
3-6 hours
Trailhead
Ammonoosuc Ravine Trailhead (Base Road)
The Mount Monroe via Ammonoosuc Ravine is 6.5 miles round trip, starting at Ammonoosuc Ravine Trailhead (Base Road). At AMC book time — half the distance in hours plus 30 minutes per 1,000 ft of climbing — that works out to roughly 3-6 hours. Most parties take longer than book time on rough or above-treeline terrain, in winter, or with a heavy pack.
The Mount Monroe via Ammonoosuc Ravine climbs about 2,751 ft over 6.5 miles — an average of roughly 420 ft of gain per mile. That figure is cumulative ascent across the whole out-and-back, not the difference between the trailhead and the high point.
HikerNerd rates the Mount Monroe via Ammonoosuc Ravine Moderate, scored with the Shenandoah difficulty formula — √(elevation gain × 2 × distance) — applied to its 6.5 miles and 2,751 ft of gain. The score measures physical effort only. Above-treeline exposure, water crossings, and winter conditions can make a moderate-rated route the hardest day of your year, so check current conditions before committing.
The Mount Monroe via Ammonoosuc Ravine summits 1 named peak: Mount Monroe.
The Mount Monroe via Ammonoosuc Ravine starts at Ammonoosuc Ravine Trailhead (Base Road). Check the trail alerts on this page before you drive — trailhead access and parking in the White Mountains change with closures and construction.
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