The Mount Jackson via Webster-Jackson Trail is a 4.9-mile out-and-back with 2,140 ft of elevation gain.
4.9 mi • 2,140 ft gain • 2-5 hours • Webster-Jackson Trailhead (Route 302)
Feels like 44°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 | 39° 38° | 43° 40° | 42° 40° | 40° 38° | 42° 39° | 43° 42° | 43° 42° | 50° 46° | 48° 46° |
| Chill °F | 33° | 34° | 30° | 28° | 31° | 35° | 35° | 44° | 42° |
| Wind mph | 7 | 10 | 20 | 18 | 13 | 14 | 12 | 5 | 7 |
| Gust mph est. | 11 | 15 | 32 | 29 | 21 | 22 | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | - | - | - | - | - | - |
| Freezing ft | 9,351 ft | 10,495 ft | 11,677 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 100% | 2% | 3% | 3% | - | - | - | - |
| Vis mi | clear | clear | clear | clear | clear | clear | clear | clear | clear |
| UV | 4 | 6 | — | 4 | 5 | — | 4 | 5 | — |
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| Elevation | Today Sep 22 | Tomorrow Sep 23 | Thursday Sep 24 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,052 ft | 38/39° 7 | 38/40° 18 | 42/43° 12 |
| 3,300 ft | 40/42° 10 | 40/42° 17 | 43/47° 11 |
| 2,500 ft | 42/46° 8 | 42/44° 14 | 45/51° 7 |
| Trailhead 2,000 ft | 43/48° 6 | 43/46° 12 | 45/53° 5 |
4 more days of forecast — plan around the weather window, not just tomorrow.
Full hourly summit forecasts: Mount Jackson weather
Climbs the Webster-Jackson Trail from Route 302 near the top of Crawford Notch, taking the Jackson branch to the summit's open ledges. The final pitch is a short, steep scramble. Big views over the Southern Presidentials for a modest effort.
Distance
4.9 mi
Elevation Gain
2,140 ft
Duration
2-5 hours
Trailhead
Webster-Jackson Trailhead (Route 302)
The Mount Jackson via Webster-Jackson Trail is 4.9 miles round trip, starting at Webster-Jackson Trailhead (Route 302). At AMC book time — half the distance in hours plus 30 minutes per 1,000 ft of climbing — that works out to roughly 2-5 hours. Most parties take longer than book time on rough or above-treeline terrain, in winter, or with a heavy pack.
The Mount Jackson via Webster-Jackson Trail climbs about 2,140 ft over 4.9 miles — an average of roughly 433 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 Jackson via Webster-Jackson Trail Moderate, scored with the Shenandoah difficulty formula — √(elevation gain × 2 × distance) — applied to its 4.9 miles and 2,140 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 Jackson via Webster-Jackson Trail summits 1 named peak: Mount Jackson.
The Mount Jackson via Webster-Jackson Trail starts at Webster-Jackson Trailhead (Route 302). 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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