$2.99 from Chillingo Ltd 
Make your own weather station now! Current condition for the entire world (and for specific regions) updates every 15 minutes. Forecast information updates every 6 hours.
Before making travel plans for a hotel or flight, it can be useful to check the weather for where you want to go.
Features include:
– Fun images (clouds, sun, rain, snow) and indications of the general status
– High and low day temperature in Celsius or Fahrenheit
– Wind direction and speed in mph, km/h
– Dew point, Visibility, Humidity
– Current local time for cities
– Detailed view for each day of forecast
– The sun’s ultraviolet intensity level (UV index)
– Date/Time format settings
– Actual feel temperature
– 48-hours forecast
– 7 days forecast
– 14 days forecast
– Easy to use
Deluxeware Weather is developed by Deluxeware and published by Chillingo Ltd
App Roundup: 10 iPhone Weather Apps
In my line of work, I do quite a bit both indoors and outdoors. As such, it is crucial for me to know the weather forecast at the drop of a hat. The weather app built into the iPhone is a simple, no fluff, no garbage, weather app. …
http://theappleblog.com/2009/04/17/app-roundup-10-iphone-weather-apps/
Apps for Everything 