Sierra High Route – September conditions

Overall, you should have no problems with existing snow, even in a snow year like this. If you start in mid-September, you’d finish in early October? The later you finish, the lower the temps would be and the higher chance of snow. Weather-wise there is a slight chance of snow at higher elevations at that time; it’s not something I would be stressed about, but I wouldn’t be surprised either. In September there is not a monsoonal weather pattern, so thunderstorms are also not usually a common concern. Hope that helps! If you find you need more information, posting at High Sierra Topix is also a good resource.