Summit forecast for 4,761 ft · Twin · Updated 3x daily
As of September 5, 2026 at 1:20 PM ET
North Twin Mountain (4,761 ft) is currently 47°F (feels like 44°F) with moderate drizzle and N winds at 7 mph, gusting to 11 mph. Today's freezing level is 8,760–11,286 ft. Expect the summit to run about 9°F colder than the trailhead. Trail conditions are rated Moderate.
Valley forecasts don't apply up high — temperatures drop about 3.0°F per 1,000 ft on North Twin Mountain.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 4,761 ft | 47° – 51°F | 23 mph | 39°F |
| Treeline 4,000 ft | 49° – 53°F | 22 mph | 42°F |
| Trailhead 2,000 ft | 56° – 60°F | 8 mph | 56°F |
Freezing level today: 8,760–11,286 ft
~3°F drop per 1,000ft
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Today Sep 5 | Tomorrow Sep 6 | Monday Sep 7 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | fog | drizzle | drizzle | fog | cloudy | fog | fog | cloudy | drizzle |
| Temp °F hi / lo | 51° 48° | 49° 48° | 48° 43° | 43° 42° | 45° 43° | 44° 42° | 47° 43° | 52° 47° | 52° 47° |
| Chill °F | 41° | 42° | 35° | 33° | 33° | 31° | 33° | 39° | 38° |
| Wind mph | 20 | 17 | 16 | 19 | 25 | 29 | 26 | 26 | 29 |
| Gust mph est. | 32 | 27 | 26 | 30 | 40 | 46 | 42 | 38 | 44 |
| Storm risk | — | — | — | — | — | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | - | - | - | - | - | 0.1 |
| Freezing ft | 9,641 ft | 8,076 ft | 11,197 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 75% | 100% | 100% |
| Vis mi | <0.1 | <0.1 | 0.2 | 0.5 | 9 | 0.1 | 4 | clear | 3 |
| UV | 3 | 3 | — | 5 | 6 | — | 5 | 6 | — |
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| Elevation | Today Sep 5 | Tomorrow Sep 6 | Monday Sep 7 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,761 ft | 48/51° 20 | 42/43° 19 | 43/47° 26 |
| 4,100 ft | 49/52° 19 | 44/45° 17 | 44/48° 25 |
| 3,300 ft | 52/54° 16 | 47/49° 14 | 46/51° 19 |
| 2,500 ft | 55/56° 10 | 49/53° 11 | 48/56° 11 |
| Trailhead 2,000 ft | 57/58° 8 | 51/55° 10 | 49/58° 9 |
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 September 5, 2026 at 1:20 PM ET: North Twin Mountain (4,761 ft) is currently 47°F (feels like 44°F) with moderate drizzle and N winds at 7 mph, gusting to 11 mph. Today's freezing level is 8,760–11,286 ft. Expect the summit to run about 9°F colder than the trailhead. Trail conditions are rated Moderate.
Temperatures drop roughly 3.0°F per 1,000 ft of elevation on North Twin Mountain. Today the trailhead (2,000 ft) tops out around 60°F while the summit (4,761 ft) reaches about 51°F, with a wind chill as low as 39°F.
Winds at the summit of North Twin Mountain are forecast to reach 23 mph today, with 22 mph at treeline. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (8,760–11,286 ft) is above the 4,761 ft summit of North Twin Mountain, so the full route should stay above freezing.