Summit forecast for 3,165 ft · Monadnock · Updated 3x daily
As of August 16, 2026 at 8:20 PM ET
Mount Monadnock (3,165 ft) is currently 59°F (feels like 55°F) with overcast and S winds at 12 mph, gusting to 21 mph. Today's freezing level is 13,911–15,781 ft. Expect the summit to run about 5°F colder than the trailhead. Trail conditions are rated Moderate.
Valley forecasts don't apply up high — temperatures drop about 3.4°F per 1,000 ft on Mount Monadnock.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 3,165 ft | 53° – 63°F | 33 mph | 53°F |
| Trailhead 2,000 ft | 56° – 68°F | 28 mph | 56°F |
Freezing level today: 13,911–15,781 ft
~3.4°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 | sunny | cloudy | drizzle | drizzle | fog | cloudy | fog | drizzle | drizzle |
| Temp °F hi / lo | 57° 55° | 63° 58° | 61° 58° | 60° 58° | 62° 60° | 65° 62° | 61° 60° | 69° 61° | 69° 64° |
| Chill °F | — | — | — | — | — | — | — | — | — |
| Wind mph | 13 | 24 | 36 | 31 | 20 | 12 | 15 | 13 | 12 |
| Gust mph est. | 21 | — | 42 | 39 | 32 | — | — | — | — |
| Storm risk | — | — | — | — | — | — | — | mod | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | 0.0 | 0.1 | - | - | - | 0.1 | - |
| Freezing ft | 15,050 ft | 15,114 ft | 15,154 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 37% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Vis mi | clear | clear | <0.1 | <0.1 | <0.1 | 8 | <0.1 | clear | clear |
| UV | 6 | 7 | — | 1 | 1 | — | 2 | 7 | — |
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 3,165 ft | 55/57° 13 | 58/60° 31 | 60/61° 15 |
| 2,500 ft | 56/59° 8 | 59/60° 29 | 62/63° 17 |
| Trailhead 2,000 ft | 57/61° 6 | 60/61° 25 | 63/65° 15 |
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 Monadnock (3,165 ft) is currently 59°F (feels like 55°F) with overcast and S winds at 12 mph, gusting to 21 mph. Today's freezing level is 13,911–15,781 ft. Expect the summit to run about 5°F colder than the trailhead. Trail conditions are rated Moderate.
Temperatures drop roughly 3.4°F per 1,000 ft of elevation on Mount Monadnock. Today the trailhead (2,000 ft) tops out around 68°F while the summit (3,165 ft) reaches about 63°F, with a wind chill as low as 53°F.
Winds at the summit of Mount Monadnock are forecast to reach 33 mph today. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (13,911–15,781 ft) is above the 3,165 ft summit of Mount Monadnock, so the full route should stay above freezing.