4,358 ft | Kinsman | 2 routes
As of September 9, 2026
Trail conditions on South Kinsman Mountain are currently rated Difficult. It's 42°F (feels like 35°F) with SE winds at 8 mph. The shortest of 2 listed routes is Kinsman's Out and Back: 9.5 miles round trip with 3,287 ft of elevation gain, taking about 5-8 hours. South Kinsman Mountain (4,358 ft) is #22 of 48 on the NH 48 list. See the hour-by-hour South Kinsman Mountain weather forecast for summit temps, wind chill, and the best hiking window.
South Kinsman Mountain weather forecast
Hourly summit temps, wind chill & freezing level, trailhead to summit
Feels like 35°F
Recent Precipitation
Rain: 0.41" (24h) · 0.44" (48h)
~2.4°F drop per 1,000ft
Conditions summary as of September 9, 2026
South Kinsman is currently manageable but conditions are deteriorating fast, with heavy rain and strong winds moving in through Wednesday night and Thursday. Trails are already wet and muddy from recent rain, and ridge winds gusting into the 45-55 mph range will make the exposed sections near the summit quite uncomfortable and slippery. Friday offers a drier, calmer window and is the better choice for this hike.
Expect a swing of about 10°F between the trailhead and summit, with winds increasing dramatically from ~25 mph at the trailhead to 45-55 mph near treeline and the summit; pack a windproof layer to don once you approach treeline, since wind chill near the top will hover in the upper 30s even though air temperature stays above freezing.
Best Hiking Window
Friday, September 11 in the early morning through midday — precipitation chance is low (6%) and winds should be calmer, though it will be noticeably colder
Last synthesized Sep 9, 8:20 AM
Planning a hike here this week?
Trailblazer adds the full 7-day summit forecast, the best day to go for every peak, and conditions for each route up.
Trail: Mt. Kinsman Trail, Kinsman Ridge Trail
Conditions: Dry Trail, Wet/Slippery Rock
“A FINE day in the forest was had. I have not used this trail due to the landowners squabble. As a North Country resident who lives ten minutes away, these folks routinely air their dirty laundry in op-eds about eachother and have had articles written about them about how NOT to do business up here. I really did not want to patronize them or give them any support due to this. I likely still wont, but credit is due to the work they have done from the parking lot (which they complained about the old one was visible, but then moved the new one behind their house, which they where smoking pot out there at 8am). It's cruiser. Wet trails, minor erosion is starting to be evident (some more than minor) on KRT. Another trail being loved to death. No issues, car to car in about 5h”
Trail: Mt. Kinsman Trail, Kinsman Ridge Trail, Reel Brook Trail, Bald Peak Spur
Conditions: Dry Trail, Mud - Minor/Avoidable
“I biked from Reel Brook to the new Mt. Kinsman trailhead. It's a quick, mostly downhill run. Bald Peak does have a nice western view, but IMO it would not be worth the $20 car parking fee (I'm from Maine) if it had been my only objective for the day. Of note, I did meet a hiker on the way up who used the old trailhead to access the trail without paying the fee. The Kinsman Flume is very impressive and somewhat scary since you can get right to the edge of its impressive drop. Nice views along the ridge and met many NOBOs and one SOBO. The descent to Harrington Pond is challenging; I think this might be a risky route if the ledges are wet. It took me longer than the 30 minute AMC guide time to descend the mile to Harrington Pond; lots of sitting down and careful sliding from foothold to foothold. Reel Brook was a very pleasant and easy walk down after the hours of scrambling on the Ridge.”
Trail: Basin-Cascades Trail, Cascade Brook Trail, Fishin' Jimmy Trail, Kinsman Ridge Trail
Conditions: Dry Trail, Mud - Minor/Avoidable
“The ledges were pretty much dry making for safe footing. I hadn't been on Basin-Cascades and Cascade Brook trails for decades, so it was like seeing a new trail. They are an easy way to get up to the Lonesome Lake hut with some falls and pools to enjoy. Great view from the docks at Lonesome Lake and at the summits. At North Kinsman one can descend from the initial ledge that looks to Lonesome Lake to arrive at the second ledge that allows a view down to Kinsman Pond. There are a couple of minor ledges and a few branches extending into the short path to this lower ledge. There are two knobs on South Kinsman. The south knob has the best views and the "throne seat: on the large cairn.. Lots of hikers out today. I met hikers from all the New England states coming from both the east and west approaches to the ridge. Also met many AT thru and section hikers from many US states as well as Germany.”
Tap a day header to expand to 3hr or hourly detail
Today Sep 9 | Tomorrow Sep 10 | Friday Sep 11 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| AM | PM | night | AM | PM | night | AM | PM | night | |
| Temperature & Wind | |||||||||
| Weather | cloudy | drizzle | rain | fog | sunny | cloudy | cloudy | sunny | cloudy |
| Temp °F hi / lo | 54° 52° | 56° 54° | 59° 56° | 55° 54° | 54° 47° | 48° 38° | 40° 35° | 47° 42° | 49° 44° |
| Chill °F | — | — | — | — | 37° | 25° | 23° | 32° | 34° |
| Wind mph | 21 | 33 | 50 | 36 | 36 | 37 | 24 | 24 | 28 |
| Gust mph est. | 34 | 53 | 70 | 58 | 57 | 59 | 38 | 38 | 45 |
| Storm risk | — | — | — | — | — | — | — | — | — |
| Precipitation | |||||||||
| Precip in (rain/snow) | - | - | 0.9 | - | - | - | - | - | - |
| Freezing ft | 12,946 ft | 12,904 ft | 13,447 ft | ||||||
| Conditions | |||||||||
| Cloud cover | 100% | 100% | 100% | 100% | 23% | 100% | 100% | - | 100% |
| Vis mi | clear | 8 | <0.1 | 0.1 | clear | clear | clear | clear | clear |
| UV | 3 | 3 | — | 5 | 6 | — | 5 | 6 | — |
Tap a day header to expand AM/PM/Night detail
| Elevation | Today Sep 9 | Tomorrow Sep 10 | Friday Sep 11 |
|---|---|---|---|
| lo/hi °F · wind mph & dir · chill °F | |||
| Summit 4,358 ft | 52/54° 21 | 54/55° 36 | 35/40° 24 |
| 4,100 ft | 52/54° 20 | 55/56° 35 | 35/40° 21 |
| 3,300 ft | 53/54° 18 | 59/60° 29 | 38/44° 17 |
| 2,500 ft | 53/54° 14 | 62/64° 25 | 42/48° 14 |
| Trailhead 2,000 ft | 54/55° 12 | 64/66° 21 | 42/51° 11 |
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.
Southern Kinsman peak, usually combined with North Kinsman. Lonesome Lake Hut is along the approach.
Elevation
4,358 ft
Range
Kinsman
Rank
#22 of 48
Difficulty
Difficult
Coordinates
44.1230, -71.7366
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