I've been annoyed for years at the increasing trend towards graphics-only weather forecasts. With 24 hours in a day, how can a single picture with two numbers be particularly helpful? Anyway, I finally realized how to get a nice text forecast in the Mac Dashboard - I know, I'm a little slow.
In Safari, navigate to weather.gov.
Enter your zip code in the left side.
Now, scroll down and look at the bottom right, and click on "Text Only Forecast".
No go to File->Open in Dashboard...
Highlight the middle text section, and click "Add..."
That's it, that's my not-so-new tip of the day. Now, if I could only get it in a fixed-width font:)