Yellowstone weather forecasts tend to be misleading because of the park's vast size, and most forecasts are only for the Yellowstone Lake area. A cold snowy day at Yellowstone Lake might be a mild sunny day at Mammoth Hot Springs.

The weather sectioon of the Ultimate Yellowstone iPhone and iPod Touch App provides independent 10 day forecasts for 18 locations around the park. Just preload the weather before leaving your hotel in the morning or when you have a good signal, and the forecast will be cached on your iPhone or iPod Touch so that you can access it throughout the day, even when you don't have signal.

In addition to forecasts, the weather section provides an overview of each of Yellowstone's seasons and suggests apparel for each. The Ultimate Yellowstone iPhone and iPod Touch App will help you prepare for your trip so that you are not caught unaware when, for example, it snows in the middle of June.

Don't get caught out by the Yellowstone weather - download the Ultimate Yellowstone App for the iPhone, iPod Touch and iPad from the iTunes App Store today! It will be the best $9.99 you spend on your Yellowstone vacation.