How do you handle last minute cancellations when the weather changes?

Hi everyone,

I am building PingChore on my own after seeing how often bad weather messes up appointments.

When rain or storms show up, customers cancel last minute and businesses are left reacting instead of planning. I am curious how you deal with this today.
Do you warn customers ahead of time or just handle cancellations when they happen?

I am still early and building this solo, so any real experiences or thoughts would help a lot.

Thanks.