Summit forecast for 4,140 ft · Sandwich · Updated 3x daily
4,140 ft | Sandwich | 1 route
As of October 22, 2026 at 1:20 PM ET
Middle Tripyramid (4,140 ft) is currently 45°F (feels like 35°F) with clear sky and N winds at 14 mph, gusting to 25 mph. Today's freezing level is 4,462–11,811 ft. Expect the summit to run about 5°F colder than the trailhead. Trail conditions are rated Difficult.
Bring microspikes (29°F summit low) 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 1.8°F per 1,000 ft on Middle Tripyramid.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 4,140 ft | 35° – 48°F | 39 mph | 20°F |
| Treeline 4,000 ft | 35° – 48°F | 39 mph | 20°F |
| Trailhead 2,000 ft | 40° – 53°F | 20 mph | 30°F |
Freezing level today: 4,462–11,811 ft
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| Elevation | Today Oct 22 | Tomorrow Oct 23 | Saturday Oct 24 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,140 ft | 47/48° 28 | 29/30° 28 | 38/41° 14 |
| 4,100 ft | 47/48° 28 | 29/30° 28 | 38/41° 14 |
| 3,300 ft | 47/48° 29 | 30/31° 25 | 38/41° 11 |
| 2,500 ft | 46/49° 20 | 32/34° 17 | 38/42° 9 |
| Trailhead 2,000 ft | 47/51° 14 | 33/36° 12 | 38/44° 8 |
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: Middle Tripyramid (4,140 ft) is currently 45°F (feels like 35°F) with clear sky and N winds at 14 mph, gusting to 25 mph. Today's freezing level is 4,462–11,811 ft. Expect the summit to run about 5°F colder than the trailhead. Trail conditions are rated Difficult.
Temperatures drop roughly 1.8°F per 1,000 ft of elevation on Middle Tripyramid. Today the trailhead (2,000 ft) tops out around 53°F while the summit (4,140 ft) reaches about 48°F, with a wind chill as low as 20°F.
Winds at the summit of Middle Tripyramid are forecast to reach 39 mph today, with 39 mph at treeline. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (4,462–11,811 ft) is above the 4,140 ft summit of Middle Tripyramid, so the full route should stay above freezing.
Middle Tripyramid Trail Conditions
AI conditions, hazards, gear & trail reports
Routes up Middle Tripyramid
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.
61 mph
Summit gusts
Plan a below-treeline hike
Daytime gusts near 61 mph above treeline. Pick a sheltered route or another day.
29°F
Summit low
Microspikes
Summit lows near 29°F, so expect ice on rock and the upper trail.
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.