AccuWeather.com

An international website which can be customised for individual predefined locations (e.g. cities; example link for Wellington – see below). This forecast is in average pretty good and provides hour-by-hour forecasts and some basic astronomical data.

http://www.accuweather.com/world-index-forecast.asp?partner=netweather&locCode=OCN%7CNZ%7CNZ000%7CWELLINGTON%7C&metric=1