Early indications for [url=http://www.metcheck.com/V40/UK/FREE/7days.asp]'Londonderry'[/url] are decent enough, dry and a light northerly breeze, temps around 14/15c in the afternoon, of course this will change more than likely, several dozen times at least with conflicting reports on various websites.
[url=http://www.metoffice.gov.uk/lib/includes/fsssi/city/londonderry.html]UK Met Office[/url]
[url=http://www.theweatheroutlook.com/forregions14.asp?set=northernireland&range=14]Weather Outlook[/url]