I understand that there are web updates each version of Firefox. I also understand that weather.com is not working as expected. Please first try Firefox in Safe Mode: Diagnose Firefox issues using Troubleshoot Mode

Then please also contact the developer of the site for more information on what might be causing the issue.

Flash on Firefox 42 Windows 10 has stopped working. https://support.mozilla.org/questions/1092812

was marked as solved. What happen?

Firefox 42+ has a Tracking Protection feature that is enabled by default in Private Browsing mode. When you are in private browsing mode then Firefox can show a shield icon at the left end of the location/address bar that some content is affected.

You can disable this feature in "Options/Preferences > Privacy" or via the about:privatebrowsing page that get when you open a New Private Window.

• Options/Preferences > Privacy: "Use Tracking Protection in Private Windows"

• https://support.mozilla.org/kb/tracking-protection-firefox
• https://support.mozilla.org/kb/control-center-site-privacy-and-security-firefox