Summit forecast for 2,382 ft · Belknap Range · Updated 3x daily
As of September 4, 2026 at 1:20 PM ET
Belknap Mountain (2,382 ft) is currently 71°F (feels like 70°F) with mainly clear and NW winds at 9 mph, gusting to 13 mph. Today's freezing level is 10,531–14,075 ft. Expect the summit to run about 1°F colder than the trailhead. Trail conditions are rated Good.
Valley forecasts don't apply up high — temperatures drop about 4.2°F per 1,000 ft on Belknap Mountain.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 2,382 ft | 62° – 69°F | 23 mph | 62°F |
| Trailhead 2,000 ft | 63° – 70°F | 22 mph | 63°F |
Freezing level today: 10,531–14,075 ft
~4.2°F drop per 1,000ft
Tap a day header to expand to 3hr or hourly detail
Today Sep 4 | Tomorrow Sep 5 | Sunday Sep 6 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | fog | sunny | cloudy | rain | drizzle | ptly cloudy | drizzle | cloudy | cloudy |
| Temp °F hi / lo | 64° 62° | 69° 65° | 66° 59° | 59° 56° | 57° 55° | 55° 50° | 55° 51° | 62° 58° | 57° 55° |
| Chill °F | — | — | — | — | — | 42° | — | — | — |
| Wind mph | 13 | 19 | 23 | 16 | 22 | 27 | 17 | 22 | 21 |
| Gust mph est. | — | — | — | — | — | — | — | — | — |
| Storm risk | mod | — | — | — | — | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | 0.1 | - | - | 0.0 | - | - |
| Freezing ft | 12,240 ft | 9,776 ft | 8,237 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 22% | 100% | 100% | 100% | 55% | 87% | 80% | 97% |
| Vis mi | 0.2 | clear | 10 | 3 | 6 | clear | 7 | clear | clear |
| UV | 5 | 6 | — | 3 | 3 | — | 5 | 6 | — |
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| Elevation | Today Sep 4 | Tomorrow Sep 5 | Sunday Sep 6 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 2,382 ft | 62/64° 13 | 56/59° 16 | 51/55° 17 |
| Trailhead 2,000 ft | 63/65° 12 | 57/60° 14 | 52/56° 16 |
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 4, 2026 at 1:20 PM ET: Belknap Mountain (2,382 ft) is currently 71°F (feels like 70°F) with mainly clear and NW winds at 9 mph, gusting to 13 mph. Today's freezing level is 10,531–14,075 ft. Expect the summit to run about 1°F colder than the trailhead. Trail conditions are rated Good.
Temperatures drop roughly 4.2°F per 1,000 ft of elevation on Belknap Mountain. Today the trailhead (2,000 ft) tops out around 70°F while the summit (2,382 ft) reaches about 69°F, with a wind chill as low as 62°F.
Winds at the summit of Belknap Mountain are forecast to reach 23 mph today. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (10,531–14,075 ft) is above the 2,382 ft summit of Belknap Mountain, so the full route should stay above freezing.