One of the better jailbreak apps is WeatherIcon, available in Cydia. This app allows two things: a temperature display in the status bar, and live updates/changes to your designated weather app icon (Apple’s native weather app, The Weather Channel, Weatherbug, etc…) that reflect current weather conditions. This way you can remember it’s a dapper -14 degrees out without even unlocking your phone.

This is a clean and simple app. The temperature display in the status bar is unobtrusive (though there is an option to include a small image of current weather that takes up a little more space) and the various icon graphics for current weather are hi-res for iPhone 4 and well, accurate. Is it raining outside? Why yes, my iPhone weather icon tells me it is!

There’s also some cool tweaks such as:

  • Lets you set the update interval to 1, 5, 10, 15, 30 minutes, or 1 to several hours. This can conserve battery life if you set it higher.
  • Display current temp as a badge on your weather app icon rather than changing the icon entirely. Good if you have the image enabled in the status bar already, or if you like The Weather Icon’s app and don’t want to change it.
  • Temperature displayed can be actual temperature or wind chill temperature, also in Fahrenheit or Celsius.
  • Temp info is pulled from whatever city is first in the native weather app, so you can change it easily.

This is not a new app by any mean so you might have already given it a try. If so, let us know how you like it.