I guess talking to my phone is just weird for me, since I am not used to it, but I do all those things manually.
I check the weather with one touch on the home screen.
I don't need to navigate to work, because the trip is short enough and there won't be any heavy traffic.
The alarm is set to 6.30 anyways, I don't have to change it daily, so I just left the standard weekday setting.
Not hating on your use case, but I am always around people and I think I would get several odd glances, when talking to my phone like that.
First thing in the morning: How's the weather?
In the car: Navigate to work. Play NOFX shuffled.
At work: Remind me to fix Monit on the Kafka cluster.
Before bed: Wake me up at 7am.