Siri has some great features for checking the weather. However, Siri uses the yahoo weather service rather than the UK’s National Weather Service the Met Office. UK Siri Weather is a tweak to get official Met Office weather information in response to Siri queries. UK Siri Weather is a companion to UK Weather for iPhone which provides Met Office weather information in the default iPhone weather app as well as in the Notification Center Weather Widget.
Clicking on the UK Weather button in the Siri response opens the Met Office forecast page for that location in Safari. You can also configure which app runs when you click on the forecast description if you want to run something other than the default iPhone weather application such as the offical Met Office app.
UK Siri Weather is an extension based on the AssistantExtensions framework. AssistantExtensions will be installed. Enable this plugin from Settings
There are no new icons added to the homescreen. Configure options from the Settings app.
For more information see the Developer’s Page below