Summit forecast for 1,670 ft · Belknap Range · Updated 3x daily
As of September 4, 2026 at 1:20 PM ET
Mount Anna (1,670 ft) is currently 74°F (feels like 73°F) with clear sky and NW winds at 9 mph, gusting to 14 mph. Today's freezing level is 10,531–14,042 ft. Trail conditions are rated Good.
Valley forecasts don't apply up high — temperatures drop about 4.2°F per 1,000 ft on Mount Anna.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 1,670 ft | 63° – 72°F | 21 mph | 63°F |
| Trailhead 2,000 ft | 63° – 70°F | 22 mph | 63°F |
Freezing level today: 10,531–14,042 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 | 66° 63° | 72° 68° | 69° 62° | 61° 58° | 60° 58° | 58° 53° | 58° 53° | 65° 61° | 60° 57° |
| Chill °F | — | — | — | — | — | — | — | — | — |
| Wind mph | 11 | 18 | 21 | 13 | 21 | 24 | 16 | 21 | 21 |
| Gust mph est. | — | — | — | — | — | — | — | — | — |
| Storm risk | mod | — | — | — | — | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | 0.1 | 0.0 | - | 0.0 | - | - |
| Freezing ft | 12,168 ft | 9,768 ft | 8,237 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 18% | 100% | 100% | 100% | 68% | 87% | 80% | 97% |
| Vis mi | 0.2 | clear | clear | 4 | 6 | 10 | 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 1,670 ft | 63/66° 11 | 58/61° 13 | 53/58° 16 |
| Trailhead 2,000 ft | 63/65° 12 | 57/60° 14 | 52/56° 17 |
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: Mount Anna (1,670 ft) is currently 74°F (feels like 73°F) with clear sky and NW winds at 9 mph, gusting to 14 mph. Today's freezing level is 10,531–14,042 ft. Trail conditions are rated Good.
Temperatures drop roughly 4.2°F per 1,000 ft of elevation on Mount Anna. Today the trailhead (2,000 ft) tops out around 70°F while the summit (1,670 ft) reaches about 72°F, with a wind chill as low as 63°F.
Winds at the summit of Mount Anna are forecast to reach 21 mph today. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (10,531–14,042 ft) is above the 1,670 ft summit of Mount Anna, so the full route should stay above freezing.