South Sister Volcano weather
– Lat/Long: 44.10° N 121.77° W

South Sister Volcano

South Sister Volcano Climbing Notes

  • November 10, 2020
    Bend Hiker from United States

    Saturday, November 7, 2020.

    Minimal wind in the forest below the mountain (from the Devil's Lake trailhead to where it opens up above Moraine Lake).

    Stayed on the South Sister trail up to about halfway (3-3.5 miles) and there was snow on the ground (ranging from 3"-12").

    Winds were mild early in the hike and picked up as we ascended the mountain. The speeds were estimated to be 20-30+ mph at the midway point where we turned around.

    Although we did not intend to climb/summit, there were a few people (2-4) that did attempt to make it to the top. We encountered two as then were descending and they failed to make it to the top due to cold and lack of preparation (their 1st time on the mountain). 2 other hikers were towards the top based on the conversation with the other hikers.

    Overall, a nice day to hike, but a little cloudy and windy after 11am PT.

  • October 13, 2015
    Jim Bunker from United States

    Climbed on October 12. Beautiful day with expansive views. 99% snow free, only a couple very minor skiffs. About 20 hikers total. 15-20 mph winds on top. Need a jacket at top but mild down below. Very strenuous, my 58 year old legs & knees are still burning. But what a view!! Mt. Adams, Mt. Hood, Mt. Jefferson, Mt. Washington, Three Fingered Jack, Middle Sister, North Sister, Thielson?, Mary's Peak, Bachelor, Black Butte, and more!

  • October 16, 2014
    Russ Karlberg from United States

    Tried to hike on Saturday 10/11/2014, but the weather was rainy even though other forecasts said 0% chance of rain. Luckily the Sunday forecast on this site was very accurate, and I was able to reach the summit. It was fairly warm during the hike, so it seems that October can be a good month for this climb.