This is an Alfred v1 extension Updates are in progress, but not all are done yet.
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Get current conditions and temperature plus tomorrow’s forecast
Usage
> weather 12345
Where ‘12345’ is your zip code. See API docs for alternate formats
Required Configuration
Head on over to the Wunderground Weather API page and sign up and get an API key.
Once you have that key, go to Alfred Preferences, find the extension and replace the “API_KEY” placeholder in the command with your real key.
You can download Alfred App for free here: http://www.alfredapp.com/.
To kick things up a notch with extensions and more, get the Powerpack for Alfred.