Searching Google for weather information is easy -- just search for 'weather city' to find predictions for a specific place. For mobile devices, Google has tweaked its results to produce easier-to-browse forecasts.
On iOS and Android devices, searching for weather now produces a neat summary, with predictions for the next few days underneath the current temperature, and a slider that lets you see predictions for different times of day. Very handy for working out if the washing will be safe for a few more hours.
(In the same announcement, Google also claims that Google Instant has been tweaked so that typing just the letter w automatically brings up local weather, but I couldn't get this to work. If that does function for you, let us know in the comments -- it may well be another "US now, ROW later" scenario.)
[via Official Google Blog]