Safety is of utmost priority for every Rider.
It’s always up to you choosing when to ride and what orders you want to accept or reject.
Here are a few useful precautions to take in case of rain or bad weather when you’re out delivering:

If you feel that the weather is too adverse to work safely, don't worry: your own safety should be your priority.
First, seek shelter in a safe space and log out from the current session.