"Do I need an Umbrella?"
A Rainmeter weather skin (version 2.0)Enter your ZIP code, and the skin will tell you if you need to carry an umbrella. For those who want a bare essentials forecast.

No code magic here; this skin just parses the info from the excellent website doineedanumbrellaDOTcom:
[link]
US ONLY 
Sorry, the website works with US ZIP codes only.
Instructions:
Right-click on the skin and use the context menu entries to switch between light and dark versions, and between left and right orientations.

Click the location text to enter your ZIP code. (You can also try city names like on the website, but ZIP codes seem more sure-fire.)

Mouseover "YES" or "NO" to see a tooltip with some additional weather information.

If for any reason the context menu options, clicking the location, etc. are not working, all those options can be changed manually in the [Variables] section of the skin file
Credits:
Data courtesy of DoINeedAnUmbrella
[link]
Umbrella Icon is from the Token icon set by brsev
[link]Changelog:(Version 2 | 25 January 2013)

Updated the skin to work with the new version of doineedanumbrella.com

Added an option to change the skin to be right-justified

Appearance options use the new ContextTitle/ContextAction feature from Rainmeter 2.4

Default font is now Corbel, but the font can be changes in the [Variables] section of the skin file