2,212 ft · Squam Range · month-by-month from 244 observed days
2,212 ft | Squam | 1 route
February through September is the reliable window: 90% of observed days rated Good or Moderate.
Bar shows the share of observed days at each severity; the number is the share rated Good or Moderate. Good · Moderate · Difficult · Dangerous
| Month | Days observed | Good/Moderate | Recurring hazards |
|---|---|---|---|
| February | 27 | 70% | ice, severe wind chill, snow |
| March | 29 | 66% | ice, severe wind chill, snow, mud |
| April | 30 | 90% | mud, ice, slick ledges, severe wind chill |
| May | 31 | 97% | mud, slick ledges, ice, severe wind chill |
| June | 30 | 100% | mud, slick ledges, ice, severe wind chill |
| July | 31 | 100% | mud, severe wind chill, slick ledges |
| August | 31 | 100% | mud, slick ledges |
| September | 30 | 100% | mud, slick ledges |
| October | 5 |
Right now on Mount Percival
Moderateupdated Oct 10, 3 AMFebruary through September is the reliable window: 90% of observed days rated Good or Moderate.
Yes, with winter gear and experience: in our observations, 32% of December-March days rated Difficult or Dangerous. Full winter traction, insulation, and a hard turnaround plan are the baseline; check live conditions the morning you go.
Methodology: severity shares are observed, not forecast. Each day's rating is the consensus of our AI-synthesized condition reports for Mount Percival that day, collected since February 2026 (244 days so far). Months keep filling in as the archive grows. Pair the history with the live report and a summit forecast before you commit to a drive.
| 100% |
| slick ledges |