When traveling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Ho Chi Minh City is roughly less than Wilkes-Barre. You can assume this to be the case over the next 6 days.
Temperatures around the 35 °C's can be experienced in April. The weather in Wilkes-Barre is colder than in Ho Chi Minh City. Plan for potential changes in flight availability as peak weather approaches in this location.