To find a quick local weather forecast in the US with Google, simply type weather followed by a city and state or a zip code. For example, to find the weather in Eldorado, Texas, search for

weather eldorado tx

You don't need to add commas between city and state, and you don't need to capitalize any names. You'll see a short listing of the local weather followed by relevant search results.

Note: Google is not forgiving with the spelling of city names when you use this shortcut. - searchweather