What is weather like in late October into Nov. on JMT?

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Thinking about doing a thru-hike of the JMT starting in late October. Expecting cold weather primarily but will snowfall be a major problem by then? I’ve hiked the JMT numerous times, but in July/August. Not foreign to winter camping at all but don’t want to have snowdrifts or dangerous passes to deal with.

HankPoisson