Hello, Cathy!
Thanks so much for sending your question. I already love your question because fireworks are my priority in every Disney experience!
The Disneyland Resort consistently publishes an
Entertainment Schedule covering upcoming shows and special events 45 days in advance. This means that the entertainment schedule for September will be published soon, and we will be able to check for fireworks shows!
Since you're coming in September, I'm glad to share that you may be able to attend
Oogie Boogie Bash! The party will happen on select nights from September 6 through October 31, and it's a spooktacular way to experience
Disney California Adventure Park!
I hope you have the most wonderful experience at the Disneyland Resort later this year, Cathy!
May the magic be with you,
Julie