Summit forecast for 4,328 ft · Franconia · Updated 3x daily
As of July 22, 2026
Mount Flume (4,328 ft) is currently 57°F (feels like 55°F) with overcast and SSW winds at 9 mph, gusting to 20 mph. Today's freezing level is 12,270–13,550 ft. Expect the summit to run about 11°F colder than the trailhead. Trail conditions are rated Dangerous.
Valley forecasts don't apply up high — temperatures drop about 3.6°F per 1,000 ft on Mount Flume.
| Elevation | Temp Range | Max Wind | Wind Chill (Low) |
|---|---|---|---|
| Summit 4,328 ft | 46° – 62°F | 31 mph | 36°F |
| Treeline 4,000 ft | 48° – 64°F | 30 mph | 39°F |
| Trailhead 2,000 ft | 56° – 73°F | 17 mph | 56°F |
Freezing level today: 12,270–13,550 ft
~3.6°F drop per 1,000ft
Tap a day header to expand to 3hr or hourly detail
Today Jul 22 | Tomorrow Jul 23 | Friday Jul 24 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | fog | cloudy | fog | sunny | sunny | sunny | sunny | cloudy | cloudy |
| Temp °F hi / lo | 60° 58° | 62° 56° | 54° 44° | 46° 44° | 54° 48° | 55° 53° | 56° 55° | 61° 57° | 61° 58° |
| Chill °F | — | — | 34° | 35° | 41° | — | — | — | — |
| Wind mph | 24 | 28 | 31 | 23 | 19 | 13 | 6 | 8 | 10 |
| Gust mph est. | 38 | 45 | 50 | 37 | 30 | 21 | — | — | — |
| Storm risk | mod | high | — | — | — | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | - | - | - | - | - | - |
| Freezing ft | 12,896 ft | 10,648 ft | 11,648 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 100% | 100% | 2% | 2% | - | 6% | 100% | 100% |
| Vis mi | <0.1 | 8 | 0.4 | 8 | clear | clear | clear | clear | clear |
| UV | 2 | 7 | — | 6 | 7 | — | 6 | 6 | — |
Tap a day header to expand AM/PM/Night detail
| Elevation | Today Jul 22 | Tomorrow Jul 23 | Friday Jul 24 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,328 ft | 58/60° 24 | 44/46° 23 | 55/56° 6 |
| 4,100 ft | 59/61° 22 | 44/47° 23 | 56/57° 6 |
| 3,300 ft | 61/65° 18 | 46/51° 18 | 59/61° 6 |
| 2,500 ft | 63/68° 14 | 49/55° 14 | 62/65° 6 |
| Trailhead 2,000 ft | 65/70° 12 | 50/57° 12 | 61/67° 5 |
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 July 22, 2026: Mount Flume (4,328 ft) is currently 57°F (feels like 55°F) with overcast and SSW winds at 9 mph, gusting to 20 mph. Today's freezing level is 12,270–13,550 ft. Expect the summit to run about 11°F colder than the trailhead. Trail conditions are rated Dangerous.
Temperatures drop roughly 3.6°F per 1,000 ft of elevation on Mount Flume. Today the trailhead (2,000 ft) tops out around 73°F while the summit (4,328 ft) reaches about 62°F, with a wind chill as low as 36°F.
Winds at the summit of Mount Flume are forecast to reach 31 mph today, with 30 mph at treeline. Above treeline there is no shelter from wind — plan layers around wind chill, not air temperature.
Today's freezing level (12,270–13,550 ft) is above the 4,328 ft summit of Mount Flume, so the full route should stay above freezing.