Summit forecast for 4,761 ft · Twin · Updated 3x daily
As of July 22, 2026
North Twin Mountain (4,761 ft) is currently 56°F (feels like 53°F) with overcast and S winds at 10 mph, gusting to 22 mph. Today's freezing level is 12,303–13,648 ft. Expect the summit to run about 11°F colder than the trailhead. Trail conditions are rated Dangerous.
Valley forecasts don't apply up high — temperatures drop about 3.6°F per 1,000 ft on North Twin Mountain.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 4,761 ft | 45° – 62°F | 33 mph | 35°F |
| Treeline 4,000 ft | 48° – 64°F | 29 mph | 39°F |
| Trailhead 2,000 ft | 56° – 73°F | 16 mph | 56°F |
Freezing level today: 12,303–13,648 ft
~3.6°F drop per 1,000ft
Tap a day header to expand to 3hr or hourly detail
Today Jul 22 | Tomorrow Jul 23 | Friday Jul 24 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | fog | drizzle | fog | sunny | sunny | sunny | sunny | cloudy | ptly cloudy |
| Temp °F hi / lo | 60° 57° | 60° 54° | 52° 43° | 46° 43° | 52° 46° | 53° 51° | 54° 52° | 59° 56° | 58° 57° |
| Chill °F | — | — | 32° | 34° | 38° | — | — | — | — |
| Wind mph | 25 | 29 | 32 | 23 | 20 | 14 | 6 | 6 | 7 |
| Gust mph est. | 40 | 46 | 51 | 37 | 32 | 22 | — | — | 11 |
| Storm risk | mod | high | — | — | — | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | - | - | - | - | - | - |
| Freezing ft | 12,883 ft | 10,578 ft | 11,192 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 100% | 100% | 2% | 2% | - | 5% | 100% | 77% |
| Vis mi | <0.1 | 8 | <0.1 | 8 | clear | clear | clear | clear | clear |
| UV | 3 | 7 | — | 6 | 7 | — | 6 | 7 | — |
Tap a day header to expand AM/PM/Night detail
| Elevation | Today Jul 22 | Tomorrow Jul 23 | Friday Jul 24 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,761 ft | 57/60° 25 | 43/46° 23 | 52/54° 6 |
| 4,100 ft | 59/61° 21 | 44/47° 22 | 55/58° 6 |
| 3,300 ft | 61/65° 17 | 46/51° 17 | 59/62° 5 |
| 2,500 ft | 64/68° 13 | 48/55° 13 | 61/66° 5 |
| Trailhead 2,000 ft | 65/70° 12 | 50/57° 11 | 59/68° 4 |
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 July 22, 2026: North Twin Mountain (4,761 ft) is currently 56°F (feels like 53°F) with overcast and S winds at 10 mph, gusting to 22 mph. Today's freezing level is 12,303–13,648 ft. Expect the summit to run about 11°F colder than the trailhead. Trail conditions are rated Dangerous.
Temperatures drop roughly 3.6°F per 1,000 ft of elevation on North Twin Mountain. Today the trailhead (2,000 ft) tops out around 73°F while the summit (4,761 ft) reaches about 62°F, with a wind chill as low as 35°F.
Winds at the summit of North Twin Mountain are forecast to reach 33 mph today, with 29 mph at treeline. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (12,303–13,648 ft) is above the 4,761 ft summit of North Twin Mountain, so the full route should stay above freezing.