Thank you Johnny!
Yes, I usually take a 10F down sleeping bag and a R6 sleeping pad in my trips even in summer months.?
Forest fires have made my Sierra North ?Lake to South Lake trip cancelled twice?. Hope this time it won’t be?that bad.
Congratulations Jingbo! I think you’re going at the perfect time. I’m one who would gladly trade a higher chance of rain and cold temps for a lower chance of mosquitoes. If you have to deal with them it will be mostly at the beginning of your trip. Once you get to September in the high Sierra they really aren’t a factor. I did the JMT from Lyell in 2020 8/16-9/2. Our biggest challenge was smoke from wildfires forcing us to push on past some planned campsites but we made it. I recommend a bag/quilt accurately rated below 30 degrees. Enjoy?!
John Girot
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There have been years where September in the Whitney area, especially late September, are _very_ cold. When I finished the JMT last week of September 2019, the last two/three days were below freezing, even during the day. Logistics, like keeping water liquid,
can catch one by surprise. Another thing to remember about September is shorter days. The “Pickup at the Portal” episode in my podcast gives details of my experience. (I believe late September 2019 was anomalous as far as extremely cold weather in the Whitney
area.)
