gnome-weather software package provides access current conditions and forecasts, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gnome-weather
gnome-weather is installed in your system.
Make ensure the gnome-weather package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnome-weather *
You will get with gnome-weather package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | GNOME |
| Package | gnome-weather |
| Version | 3.20.2-1 |
| Description | access current conditions and forecasts |
| Sub Section | gnome |