South Twin Mountain
Location: Grafton County, NH, US
Elevation: 4,892 feet
4 recorded summits
Current Conditions
Weather: Foggy
Temperature: 28°F
Wind: 26 mph
Humidity: 99%
7-Day Summit Window
Best day: 2026-04-09 (score: 95/100)
- 2026-04-05: Poor (39/100) - Heavy precipitation, breezy, cool
- 2026-04-06: Good (64/100) - Overcast, breezy, cold
- 2026-04-07: Poor (35/100) - Chance of snow, calm winds, cold
- 2026-04-08: Good (77/100) - Clear skies, calm winds, cold
- 2026-04-09: Excellent (95/100) - Clear skies, calm winds
- 2026-04-10: Good (77/100) - Overcast, calm winds, cool
- 2026-04-11: Excellent (85/100) - Clear skies, calm winds, cool
Active Weather Alerts (1)
- Moderate: Winter Weather Advisory - Winter Weather Advisory issued April 5 at 2:21AM EDT until April 5 at 10:00AM EDT by NWS Gray ME
Air Quality
AQI: 33 (Good)
Public Lands
- White Mountain National Forest (NF, USFS)
Part of 3 Challenges
Recent Summits
- 7/19/2023
- 7/7/2018
- 9/4/2011
- 9/4/2011