The weather from May to August in New Jersey, USA

From May to August, you should bring clothes for spring and summer. Basically, it began to get hot in May, and short sleeves should be worn until the end of June. Oh, I live there! The temperature difference between day and night in coastal areas is quite large, and it is also very cold in summer, about 20 degrees in China, and the highest temperature during the day is 40 degrees. I mean summer. The pollen season in May has not completely passed, so be careful. Pollen disease is very serious in America. I usually don't get better until June. I hope what I said can help you!