Summit forecast for 4,285 ft · Willey · Updated 3x daily
As of August 17, 2026 at 3:40 AM ET
Mount Willey (4,285 ft) is currently 54°F (feels like 49°F) with foggy and S winds at 13 mph, gusting to 30 mph. Today's freezing level is 13,812–14,993 ft. Expect the summit to run about 10°F colder than the trailhead. Trail conditions are rated Difficult.
Valley forecasts don't apply up high — temperatures drop about 3.6°F per 1,000 ft on Mount Willey.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 4,285 ft | 56° – 62°F | 34 mph | 56°F |
| Treeline 4,000 ft | 56° – 64°F | 32 mph | 56°F |
| Trailhead 2,000 ft | 62° – 72°F | 12 mph | 62°F |
Freezing level today: 13,812–14,993 ft
~3.6°F drop per 1,000ft
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Today Aug 17 | Tomorrow Aug 18 | Wednesday Aug 19 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | drizzle | rain | rain | fog | fog | ptly cloudy | cloudy | cloudy | cloudy |
| Temp °F hi / lo | 59° 56° | 62° 59° | 60° 58° | 57° 55° | 56° 54° | 57° 56° | 59° 56° | 63° 57° | 58° 55° |
| Chill °F | — | — | — | — | — | — | — | — | — |
| Wind mph | 27 | 12 | 7 | 10 | 14 | 11 | 9 | 18 | 12 |
| Gust mph est. | 43 | 19 | 11 | 16 | 22 | 18 | — | 29 | 16 |
| Storm risk | — | mod | mod | — | — | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | 1.5 | 0.1 | - | - | - | - | - | - |
| Freezing ft | 14,598 ft | 14,423 ft | 12,764 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 75% | 100% | 100% | 100% |
| Vis mi | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | clear | clear | clear | clear |
| UV | 0 | 3 | — | 2 | 6 | — | 5 | 6 | — |
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| Elevation | Today Aug 17 | Tomorrow Aug 18 | Wednesday Aug 19 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,285 ft | 56/59° 27 | 55/57° 10 | 56/59° 9 |
| 4,100 ft | 56/59° 26 | 55/57° 11 | 57/60° 8 |
| 3,300 ft | 58/61° 20 | 58/59° 11 | 60/65° 5 |
| 2,500 ft | 60/64° 12 | 61/61° 9 | 58/69° 3 |
| Trailhead 2,000 ft | 62/66° 9 | 63/63° 7 | 58/71° 3 |
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 17, 2026 at 3:40 AM ET: Mount Willey (4,285 ft) is currently 54°F (feels like 49°F) with foggy and S winds at 13 mph, gusting to 30 mph. Today's freezing level is 13,812–14,993 ft. Expect the summit to run about 10°F colder than the trailhead. Trail conditions are rated Difficult.
Temperatures drop roughly 3.6°F per 1,000 ft of elevation on Mount Willey. Today the trailhead (2,000 ft) tops out around 72°F while the summit (4,285 ft) reaches about 62°F, with a wind chill as low as 56°F.
Winds at the summit of Mount Willey are forecast to reach 34 mph today, with 32 mph at treeline. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (13,812–14,993 ft) is above the 4,285 ft summit of Mount Willey, so the full route should stay above freezing.