You have some Weather add-on installed in Firefox. Try to Configure its Options/Settings.

To view which add-ons you have installed, click Firefox button and click Add-ons -> Add-ons Manager tab will open -> on the left, go to Extensions panel -> Here you will see a list of already installed Add-ons

Here is a list of some widely used Weather add-ons:

• https://addons.mozilla.org/en-US/firefox/search/?q=weather

Check and tell if its working.

I installed Aniweather - can't find options/settings to change location

See these:

• AniWeather Features - http://www.aniweather.com/
• AniWeather Preferences - http://www.aniweather.com/aniweather.config6.html#settings

Check and tell if its working.