We are currently entering a droughty period. If the tree is established and has otherwise been in good health, it should be fine. Trees will often do this as a way to manage water loss during drought. If you had issues prior to the drought starting, it might be wise to have the tree inspected by a certified arborist. It's possible that the spots you are seeing is maple anthracnose but I'm unable to make out the spots from your picture. I've included a link to find an arborist if needed and some information on maple anthracnose.

https://www.canr.msu.edu/news/maple_leaf_blister_and_anthracnose_two_foliar_diseases_that_can_appear_on_s

https://www.treesaregood.org/

Thank you so much for the help and the information 

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