Below are some custom icons for the Weather app.
Please note the credit to the designer is displayed by hovering over the icon. Just click on the icon you would like to download.
Just hold the lock button (that is the one at the top of your device) and the home button at the same time until you see the Apple logo on a black background (you usually have to hold the buttons for around 10 seconds before this happens). You can then release the buttons and your iPhone/iPod Touch will restart.