Sadly, the new version lost the ability to display multiple days at once on a bar, but this was bound to happen after switching to Mozilla's WebExtensions.
All the information is available in just one click anyway, it's just a new habit to take.

This is still one of the best -- if not the best -- weather add-on for Firefox.

And the city search is working again. :)

Зачем убрали из статусной строки данное расширение? Было так удобно отслеживать погоду. Верните прежний вид расширения в статусную строку
Why remove this extension from the status line? It was so convenient to track the weather. Return the previous form of the extension to the status line

I don't switch cities so don't need whatever may be broken and prefer the multi day view, so had to find out from a search where to get the older version. If I have to give up on Firefox I will, but not before every useful addon like forecastfox is completely broken.

Still a great add-on! In new version -as many others- I miss the multiple days view. But I understand that Firefox will not be the same after v57. And as some other add-ons I have (i.e. Wired-Marker), all will change to follow the new API of Firefox. The Forecastfox as well.
I have to learn a new habit, to click on the Forecastfox button. Then everything is better than before.

I use The Addon Bar:
https://addons.vaultpit.io/ru/firefox/addon/the-addon-bar/
So it's possible to keep the previous status view. Pls return this option!

Mine is still there you can add additional toolbars, mine is across the bottom with the weather across it . Not sure how long I can go with this working I'm on 53.2
Please just change it back