Google has made a couple of tweaks lately, including the improvement of Google Now's speech reply sounding more natural and the improvement of Google Now on Tap. Google would like you to use its app more and more to incorporate it into your daily life with contextual information such as traffic conditions, public transit notifications, and something that Google Now has already been doing which is notifying you of a drastic change in the weather forecast for the next day. Today, Google started rolling out another feature which can be activated by simply making a Google search for...
Source: http://www.gsmarena.com/google_now_makes_weather_card_available_as_a_shortcut_on_your_home_screen-news-17406.php