To add and view a Weather widget

From the Home screen, tap the Apps icon > the Widgets tab (at the top of the screen), then touch and hold the desired Weather widget to pick it up and place it on one of the Home screens.

NOTE

There’s a large and a small Weather widget. The small Weather widget has limited features (displays summary information and opens the Weather app).

Tap the Weather widget to access the Weather app.
Tap the Weather widget, then tap the New city icon (at the top right of the Weather app) to add cities to your list.
Swipe right or left on the Weather app to scroll through the weather information for each of the cities in your list.
Tap the Refresh icon (at the bottom of the screen or widget) to update the current weather.
Tap the City list icon (at the top of the Weather app) to view your City list.