4,902 ft | Twin | 2 routes
Feels like 51°F
Recent Precipitation
Rain: 0.49" (24h) · 0.89" (48h)
~3.2°F drop per 1,000ft
South Twin Mountain is showing DIFFICULT conditions
See exactly why with full AI conditions — hazard alerts, gear recommendations, and the best hiking window.
See Full ConditionsBest Hiking Window
Conditions are poor Wednesday due to fog, gusty winds, and thunderstorm risk. Thursday brings another round of showers, thunderstorms, and strong winds. Friday offers the clearest window — fog is expected to lift and skies will be mostly sunny, though winds remain elevated (gusts potentially 40–60 mph at higher elevations). A very early Friday morning start is recommended to maximize the clearing period before any wind or weather changes. Saturday introduces returning clouds, afternoon shower and thunderstorm chances, and summit fog — not an ideal day.
Trail: North Twin Trail, Fire Warden's Trail, Lend-A-Hand Trail, Twinway, Zealand Spur, North Twin Spur
Conditions: Dry Trail, Mud - Minor/Avoidable
“Tried the Fire Warden's Loop for the very first time and found it to be a great 18-mile loop hike connecting some mountains that aren't commonly hiked together. Much thanks to SectionHiker.com for the hike description. I do have to say that starting with Hale and ending with North Twin was probably the correct choice, with the better views on the hike coming later in the day. The Fire Warden's Trail is very easy to follow, well-graded, and obviously maintained by some devoted locals. Finding the beginning of the Fire Warden's Trail wasn't hard, but I do feel like it deserves a sign at this point. The remaining trails were the usual July experience in the White Mountains. Zealand Falls Hut was busy and I was happy to see some leftover peach cobbler available for a small price.”
Trail: North Twin Trail, Fire Warden's Trail, Lend-A-Hand Trail, Twinway, Zealand Spur, Bondcliff Trail, West Bond Spur, Lincoln Woods Trail, Osseo Trail, Franconia Ridge Trail, Garfield Ridge Trail, North Twin Spur
Conditions: Dry Trail, Wet Trail, Mud - Minor/Avoidable
“This extension of the conventional Pemi Loop was a hike I had planned for some time as a buildup to an endurance race, and the Lincoln Woods closure did not interfere with the route. Starting from the North Twin trailhead, this starts with Hale via the Fire Warden's Trail, makes a quick detour to Zealand Falls Hut, then heads up the Twinway to the Zeacliff outlook, Zealand, and the Bonds. The Bondcliff Trail marks the entry point to the standard Pemi Loop, which is then followed to the Osseo Trail (Lincoln Woods Trail is closed immediately south of this intersection), and across Franconia Ridge and Garfield Ridge. This is a formidable amount of climbing in the second half of the hike, and the South Twin ascent after 37.6 miles was the coup de grace. Trail conditions were excellent for the endeavor, with largely dry rocks, even on some of the typically wet sections of the Garfield Ridge Trail. The Bondcliff Trail had its typical muddy sections, but most of these could be avoided. The wettest segment of trail might have been the narrow corridor of the North Twin Spur. Most of the trails were unusually quiet for the Sunday of 4th of July weekend, but the Lincoln Woods closure and my civil twilight start had a lot to do with that. I encountered a number of friendly hikers between Zealand Falls Hut and Mt. Bond, and almost no one until miles later between Mt. Flume and Mt. Liberty. Though I was there around mid to late-afternoon, the number of hikers between Little Haystack and Mt. Lafayette was moderate rather than excessive. There were a few trail runners, all headed in the opposite direction, undoubtedly with similarly creative itineraries. Views were spectacular, and lower temperature and humidity made this endeavor much more pleasant than it would have been a few days earlier. Overall hike statistics: 44.0 miles, 14,050' gain, 18:20 elapsed time. Full details on Unnecessary Climb!”
Trail: North Twin Trail, North Twin Spur
Conditions: Dry Trail, Wet Trail, Wet/Slippery Rock, Standing/Running Water on Trail, Mud - Minor/Avoidable, Mud - Significant
“Have seen recent reports, mostly on AllTrails, that talks about crossing the river 3-5 times. Stay left for the first two miles from North Twin Trailhead and you only have to cross it once. Second mile from trailhead to the river is slippery in spots but nothing to be concerned about. Mud first appears after steep section heading up to North Twin and stays until getting to the col between the two peaks. Some spots are easy to navigate and some require tiptoeing on rocks. No real water on the trail with the exception of the next mile or so after the river crossing going up to North Twin from the trailhead. It was minor today and even though some of the rocks were wet in this section, it didn’t impede travel. Blue skies and Canadian wildfire smoke at the top of South Twin.”
Tap a day header to expand to 3hr or hourly detail
Today Jul 15 | Tomorrow Jul 16 | Friday Jul 17 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | fog | sunny | sunny | sunny | drizzle | sunny | sunny | cloudy | cloudy |
| Temp °F hi / lo | 59° 57° | 57° 57° | 56° 52° | 53° 51° | 56° 50° | 51° 43° | 46° 42° | 52° 47° | 52° 50° |
| Chill °F | — | — | — | — | 41° | 32° | 32° | 39° | 44° |
| Wind mph | 36 | 40 | 41 | 33 | 41 | 37 | 24 | 26 | 18 |
| Gust mph est. | 58 | 56 | 57 | 53 | 57 | 59 | 38 | 42 | — |
| Storm risk | — | — | — | — | mod | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | - | - | - | - | - | - | - |
| Freezing ft | 13,149 ft | 10,763 ft | 12,408 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 33% | 4% | 21% | 100% | - | 12% | 100% | 100% |
| Vis mi | <0.1 | clear | 9 | 9 | <0.1 | clear | clear | clear | clear |
| UV | 6 | 7 | — | 6 | 7 | — | 6 | 8 | — |
Tap a day header to expand AM/PM/Night detail
| Elevation | Today Jul 15 | Tomorrow Jul 16 | Friday Jul 17 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,902 ft | 57/59° 36 | 51/53° 33 | 42/46° 24 |
| 4,100 ft | 60/62° 33 | 53/57° 27 | 46/49° 19 |
| 3,300 ft | 63/65° 28 | 56/61° 23 | 49/54° 17 |
| 2,500 ft | 66/69° 21 | 58/64° 18 | 48/59° 11 |
| Trailhead 2,000 ft | 68/71° 19 | 60/66° 16 | 49/61° 10 |
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.
Part of the Twins Range with excellent views. Galehead Hut is nearby. Often combined with North Twin and Galehead.
Elevation
4,902 ft
Range
Twin
Rank
#8 of 48
Difficulty
Difficult
Coordinates
44.1876, -71.5548
Been to South Twin Mountain?
Be the first to share your experience!
2 incidents on file · 2 fatal · drawn from NH Fish and Game releases and regional reporting
winter backpacker, identity withheld pending family notification
The body of a winter backpacker was recovered on January 15, 2004 in the area of South Twin Mountain and the Twinway Trail in the White Mountain National Forest. The body was spotted during an Army National Guard helicopter search and airlifted to Concord Hospital. Weather conditions during the week were extremely dangerous, with temperatures dropping to -44°F and wind chills of -94°F on Mt. Washington.
37-year-old male winter backpacker from Athol, Massachusetts
Kenneth Holmes, 37, departed on a solo winter backpacking trip on January 12, 2004 from Lincoln Woods and was reported overdue on January 14. His body was recovered on January 15 near South Twin Mountain at 4,600 feet elevation; the Medical Examiner determined the cause of death was hypothermia due to environmental exposure. Rescue personnel noted behavioral signs consistent with advanced hypothermia, including removal of clothing and erratic movement, during a period of extreme cold with wind chills reported as low as -94°F on Mt. Washington.