Widget Suggestions:

• Font size is too small. I suppose 4x1 is ok since there isn't any more space but 4x2 should expand and increase font size to make it easier to read.
• It should display the next 24 hours only to make it easier to read. Scrolling may be added if possible for people who want multi-day forecast.
• If it is unable to retrieve data, it should continue to display the previous data. The error message could be displayed in the header next to the refresh button.

Solved for me too. I moved Windy to internal storage and it works now. Thanks @jmh2002 .

Windy and Android are upto date. I am using Blackberry launcher. I tried Fastkey launcher, still no windy widget.

The widget is missing on Android 8.1.0 on my BB Motion, though the app works. The widget works fine on Android 6.0 on my LG G4.