Coming to Jackson going fly fishing next week sept 10 to 15 how is weather do we need coats
Bear in mind that the climate is very dry. Temperatures don’t feel as cold here as in more humid climates. You are best off this (beautiful!) time of year with several layers and a waterproof jacket. Socks and light gloves also a good idea.
Temperatures are generally fairly mild in mid September during the day but may drop to near freezing overnight. It cools rapidly after sunset.
Expect 40+ degree temperature ranges during the day....low 30's mid 70's.
It's in the mountains.... be prepared for anything.