Thanks for the info Max. Not sure why it works for some and not others but let's hope your's keeps working because if it hiccups there is no getting it back. And it's been a month since Coot Master emailed the developer so it is not looking good.
I did a pretty extensive look at Chrome weather extensions and if you wanted current weather, a forecast and radar all on relatively small window that pops up when you click the icon, it seems like Forecastfox was it. And more detail was a click away without taking you away from the original small window. And links to in depth info were there too. But you know this. Installing and trying more than a half dozen different extensions recently made me realize how good I had it.