Considering occlusion occurs near the center of a mid-latitude cyclone that has matured, the weather would be very unsettled with rain/snow likely and maybe thunderstorms as well, potentially over a prolonged period.
The climate in most of the United States is a mid-latitude climate. Characterized by prevailing winds from the West, the weather is dependent on the source of the air mass which carries in the precipitation.
The weather is tropical in the south of Vietnam. The northern part of the country is monsoonal with a hot, rainy season from mid-May to Mid-September. The weather is warm and dry from mid-October to mid-March.