Summit forecast for 3,565 ft · Mahoosuc · Updated 3x daily
3,565 ft | Mahoosuc | 0 routes
As of October 22, 2026 at 1:20 PM ET
Mount Success (3,565 ft) is currently 43°F (feels like 32°F) with clear sky and NW winds at 16 mph, gusting to 29 mph. Today's freezing level is 3,510–11,450 ft. Expect the summit to run about 5°F colder than the trailhead. Trail conditions are rated Moderate.
Bring microspikes (28°F summit low), a waterproof shell (54 mph summit gusts) and a headlamp (only 10h 37m of daylight). Why these · Paid links, Backcountry.com pays me if you buy.
One email when the first widespread ice reports come in from the Whites, with what to bring. Then the Thursday conditions outlook each week.
Valley forecasts don't apply up high — temperatures drop about 1.6°F per 1,000 ft on Mount Success.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 3,565 ft | 32° – 46°F | 37 mph | 16°F |
| Trailhead 2,000 ft | 38° – 51°F | 24 mph | 27°F |
Freezing level today: 3,510–11,450 ft
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| Elevation | Today Oct 22 | Tomorrow Oct 23 | Saturday Oct 24 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 3,565 ft | 44/46° 28 | 28/28° 31 | 37/39° 16 |
| 3,300 ft | 44/46° 28 | 28/28° 30 | 37/39° 15 |
| 2,500 ft | 42/44° 22 | 28/31° 23 | 37/39° 11 |
| Trailhead 2,000 ft | 41/45° 15 | 30/33° 18 | 36/41° 9 |
4 more days of forecast: plan around the weather window, not just tomorrow.
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Conditions synthesized from: NWS Higher Summits Forecast, NOAA Open-Meteo, Mount Washington Observatory, NETC Trip Reports, NOHRSC Snow Depth.
As of October 22, 2026 at 1:20 PM ET: Mount Success (3,565 ft) is currently 43°F (feels like 32°F) with clear sky and NW winds at 16 mph, gusting to 29 mph. Today's freezing level is 3,510–11,450 ft. Expect the summit to run about 5°F colder than the trailhead. Trail conditions are rated Moderate.
Temperatures drop roughly 1.6°F per 1,000 ft of elevation on Mount Success. Today the trailhead (2,000 ft) tops out around 51°F while the summit (3,565 ft) reaches about 46°F, with a wind chill as low as 16°F.
Winds at the summit of Mount Success are forecast to reach 37 mph today. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
The freezing level on Mount Success today is 3,510–11,450 ft. The summit is 3,565 ft, so expect freezing temperatures on the upper mountain — check trail reports for ice and bring traction if in doubt.
Mount Success Trail Conditions
AI conditions, hazards, gear & trail reports
Routes up Mount Success
Distance, elevation gain & book time
White Mountains trail reports
Ice, mud and the traction hikers carried this week
Trailhead parking
When the lots fill, from hikers' reports
Paid links. Backcountry.com pays me if you buy. Prices are Backcountry's, checked twice a day.
28°F
Summit low
Microspikes
Summit lows near 28°F, so expect ice on rock and the upper trail.
54 mph
Summit gusts
Waterproof shell
Daytime gusts near 54 mph above treeline, and a shell is what blocks it.
10h 37m
Daylight
Headlamp
Sunset around 5:48 PM, so a late start or a slow descent ends in the dark.
The rest of the list: Winter gear guide · How I pick gear
AI-generated from public data. Always verify conditions before heading out — backcountry weather can change quickly.