Hey there Angela,
Welcome to planDisney and thank you for your question! My family and I love meeting the different characters around the Disneyland Resort - it adds that extra bit of magic to any trip - so I certainly understand wanting to plan for that.
There currently isn't a way to see a guaranteed schedule for
character experiences. The most helpful method I use to get a good idea of which characters will be where on any given day is using the
Disneyland Resort mobile app.
On the map tab, if you tap the down arrow next to "Attractions" near the top center of your screen, you can filter for "Characters" instead. For most characters, you'll be able to see the windows of time that you'll be able to catch them in and a good location to look.
As you mentioned, this is for the current day and doesn't guarantee that character will still be hanging out in that same area or in those same windows of time when you visit. However, I've found that it at least gives me a good idea of what to look for during my visit - especially when I use this feature a week or so before my trip!
I hope that's helpful, Angela! Thanks again for your question and enjoy your visit to the Happiest Place on Earth in a few weeks.
Have a Magical Day,
Greg