Packr only displays the weather above the packing list when the destination is correctly identified. When creating a new trip, it is recommended to tap on the destination in the dropdown list after typing the first letters of the destination. When your packing list is already created, you can reset the destination by tapping the menu button °°° then selecting Edit Trip.
Once the packing list is created, you can add more activities / lists by tapping the menu button °°° then selecting Edit Activities & Lists.
To remove any activity / list from your packing list, long press the row that displays the amount of items. Then select Remove from the options popup.