Hey there Paul,
Thanks for your question, and welcome to planDisney! It's always great to answer a question from a fellow Arizonan, and bonus points for asking a question about my absolute favorite season at the Disneyland Resort!
There has been no official word about
Christmas at the Disneyland Resort on the
Disney Parks Blog, yet. However, my family and I have been visiting the parks the week before Thanksgiving week (so this year, it would be the week starting November 13) since 2019 - with the exception of 2020, of course - and the kickoff for the Christmas season has been the weekend prior to our visit every year.
I, unfortunately, have no information for when the official kick-off will be for this year, but the details should be revealed on the Disney Parks Blog in the next month or two! It looks like your arrival date is November 5. While it's certainly possible the Christmas season will kick off earlier this year, if you're wanting to make sure you visit after the start and your dates are flexible then it might be worth pushing your visit back to later in November, just in case.
Typically, the Disney Parks Blog will roll out more holiday season info as part of a Halfway to the Holidays series in mid-summer, so stay tuned there to get all the official dates!
Thanks again for your question, Paul! Try to stay cool this summer and your November trip will be here before you know it.
Have a Magical Day,
Greg