Summit forecast for 4,051 ft · Willey · Updated 3x daily
As of August 16, 2026 at 8:20 PM ET
Mount Tom (4,051 ft) is currently 54°F (feels like 50°F) with overcast and SSE winds at 8 mph, gusting to 18 mph. Today's freezing level is 13,123–15,157 ft. Expect the summit to run about 9°F colder than the trailhead. Trail conditions are rated Difficult.
Valley forecasts don't apply up high — temperatures drop about 3.2°F per 1,000 ft on Mount Tom.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 4,051 ft | 49° – 57°F | 25 mph | 41°F |
| Treeline 4,000 ft | 49° – 57°F | 24 mph | 42°F |
| Trailhead 2,000 ft | 52° – 66°F | 10 mph | 52°F |
Freezing level today: 13,123–15,157 ft
~3.2°F drop per 1,000ft
Tap a day header to expand to 3hr or hourly detail
Sunday Aug 16 | Today Aug 17 | Tomorrow Aug 18 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | fog | cloudy | rain | rain | fog | fog | fog | drizzle | cloudy |
| Temp °F hi / lo | 52° 50° | 57° 52° | 57° 57° | 58° 57° | 61° 58° | 60° 59° | 58° 55° | 61° 55° | 61° 58° |
| Chill °F | 45° | — | — | — | — | — | — | — | — |
| Wind mph | 12 | 19 | 31 | 26 | 18 | 6 | 12 | 10 | 6 |
| Gust mph est. | 19 | 30 | 50 | 42 | 29 | 10 | 19 | 16 | — |
| Storm risk | — | — | — | — | mod | mod | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | 0.1 | 0.3 | - | - | - | - | - |
| Freezing ft | 14,243 ft | 14,515 ft | 14,497 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 19% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Vis mi | 0.4 | 9 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | 4 | clear |
| UV | 5 | 7 | — | 0 | 2 | — | 3 | 6 | — |
Tap a day header to expand AM/PM/Night detail
| Elevation | Sunday Aug 16 | Today Aug 17 | Tomorrow Aug 18 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,051 ft | 50/52° 12 | 57/58° 26 | 55/58° 12 |
| 3,300 ft | 51/54° 11 | 59/59° 21 | 57/60° 12 |
| 2,500 ft | 51/58° 8 | 61/62° 13 | 59/62° 10 |
| Trailhead 2,000 ft | 52/60° 7 | 62/64° 11 | 61/63° 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 August 16, 2026 at 8:20 PM ET: Mount Tom (4,051 ft) is currently 54°F (feels like 50°F) with overcast and SSE winds at 8 mph, gusting to 18 mph. Today's freezing level is 13,123–15,157 ft. Expect the summit to run about 9°F colder than the trailhead. Trail conditions are rated Difficult.
Temperatures drop roughly 3.2°F per 1,000 ft of elevation on Mount Tom. Today the trailhead (2,000 ft) tops out around 66°F while the summit (4,051 ft) reaches about 57°F, with a wind chill as low as 41°F.
Winds at the summit of Mount Tom are forecast to reach 25 mph today, with 24 mph at treeline. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (13,123–15,157 ft) is above the 4,051 ft summit of Mount Tom, so the full route should stay above freezing.