Pocket Forecast is an open source weather application for Windows Mobile. Pocket Forecast is a weather application that supports mutliple locations, multiple languages, QVGA AND VGA display, cached AND user defined updates, customized theme, AND is open source written in Basic4PPC.

Features :
Multiple locations (supports up to ten locations)
Finger swipe to scroll through locations
Cached weather feeds for each location
Skinnable themes – background images, colors & fonts
Uses Yahoo/Weather.com RSS feed
Open source – written in B4PPC
Configurable interval for updating weather feed
Integrates with S2U (custom weather setting)
QVGA and VGA support
Multi-language support
Integrates with AppToDate
Integrates with Levenum’s Today Screen plug-in
Pocket PC and PC versions

XDA-Developers Thread ( For Support and Feature Request )

Tags: finger friendly, open source, Pocket Forecast, Pocket PC, Pocket PC freeware, weather, Windows Mobile, windows mobile freeware, Windows Phone