To Know Weather conditions using Google:To see weather conditions and a four-day forecast for a particular U.S. or worldwide location, type "weather," followed by the location. Usually a city name will be enough, but you may also want to include a state or zipcode or the country for worldwide cities. For example, to see Palo Alto weather, you could search for "weather palo alto, ca" or "weather palo alto 94301".
If you like to see the weather of this location on your personalized Google homepage, you can do this by clicking on the button 'Add to my Google homepage' in the upper right corner.
example: weather palo alto, ca
and enter search....