Summit forecast for 4,180 ft · Sandwich · Updated 3x daily
As of August 16, 2026 at 8:20 PM ET
Mount Tripyramid (North Peak) (4,180 ft) is currently 55°F (feels like 50°F) with overcast and SSE winds at 10 mph, gusting to 20 mph. Today's freezing level is 13,189–15,092 ft. Expect the summit to run about 9°F colder than the trailhead. Trail conditions are rated Difficult.
Valley forecasts don't apply up high — temperatures drop about 3.2°F per 1,000 ft on Mount Tripyramid (North Peak).
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 4,180 ft | 49° – 57°F | 25 mph | 41°F |
| Treeline 4,000 ft | 49° – 57°F | 25 mph | 41°F |
| Trailhead 2,000 ft | 53° – 66°F | 11 mph | 53°F |
Freezing level today: 13,189–15,092 ft
~3.2°F drop per 1,000ft
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Sunday Aug 16 | Today Aug 17 | Tomorrow Aug 18 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | fog | cloudy | rain | rain | fog | fog | fog | drizzle | drizzle |
| Temp °F hi / lo | 51° 49° | 57° 52° | 57° 56° | 57° 56° | 61° 57° | 61° 59° | 58° 56° | 64° 57° | 61° 59° |
| Chill °F | 44° | — | — | — | — | — | — | — | — |
| Wind mph | 14 | 17 | 33 | 30 | 21 | 7 | 10 | 8 | 7 |
| Gust mph est. | 22 | 27 | 53 | 48 | 34 | 11 | — | — | — |
| Storm risk | — | — | — | — | — | — | — | mod | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | 0.2 | 0.4 | - | - | - | 0.1 | - |
| Freezing ft | 14,412 ft | 14,642 ft | 14,589 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 10% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Vis mi | 0.2 | 9 | <0.1 | <0.1 | <0.1 | <0.1 | 0.2 | clear | clear |
| UV | 5 | 7 | — | 0 | 2 | — | 4 | 6 | — |
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| Elevation | Sunday Aug 16 | Today Aug 17 | Tomorrow Aug 18 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,180 ft | 49/51° 14 | 56/57° 30 | 56/58° 10 |
| 4,100 ft | 49/51° 14 | 56/57° 30 | 56/58° 10 |
| 3,300 ft | 51/53° 14 | 58/58° 27 | 59/61° 11 |
| 2,500 ft | 52/57° 8 | 60/60° 19 | 62/63° 10 |
| Trailhead 2,000 ft | 53/59° 7 | 61/62° 15 | 64/65° 8 |
4 more days of forecast — plan around the weather window, not just tomorrow.
Conditions synthesized from: NWS Higher Summits Forecast, NOAA Open-Meteo, Mount Washington Observatory, NETC Trip Reports, NOHRSC Snow Depth, Mt. Washington Avalanche Center, USGS Stream Levels, OpenWeather Air Quality.
AI-generated from public data. Always verify conditions before heading out — backcountry weather can change quickly.
As of August 16, 2026 at 8:20 PM ET: Mount Tripyramid (North Peak) (4,180 ft) is currently 55°F (feels like 50°F) with overcast and SSE winds at 10 mph, gusting to 20 mph. Today's freezing level is 13,189–15,092 ft. Expect the summit to run about 9°F colder than the trailhead. Trail conditions are rated Difficult.
Temperatures drop roughly 3.2°F per 1,000 ft of elevation on Mount Tripyramid (North Peak). Today the trailhead (2,000 ft) tops out around 66°F while the summit (4,180 ft) reaches about 57°F, with a wind chill as low as 41°F.
Winds at the summit of Mount Tripyramid (North Peak) are forecast to reach 25 mph today, with 25 mph at treeline. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (13,189–15,092 ft) is above the 4,180 ft summit of Mount Tripyramid (North Peak), so the full route should stay above freezing.