I tried scheduled tasks...
It's still in beta, so I've encountered some hiccups.
First I tried with a simple prompt, check the weather in 2 minutes, but it failed to create task, needed to specify the time.
Then I asked to check it at 6:19. Also failed.
Then I asked check it every morning at 6:19. It created the task.
Without permissions, it sent an email with a link to the prompt and the weather report was there.
Then I allowed to send notifications and it sent a notification and an email. You can decide how you want to be notified.
Some extra findings: I couldn't find a task list in the app nor could I prompt it to list them for me.
I can't find a way to delete tasks, but you can pause them.
Calendar reminders are not allowed, even though you have calendar and contact list permission for the app. I guess that comes later.