What is the worst weather you have ever seen?

I think the weather in April this year is quite chaotic. April is the season of spring, so you can take off your thick winter clothes and put on relaxed and comfortable spring clothes. But this April not only made me wear short sleeves, but also made me wear a down jacket. The weather changes every few days. Today, the temperature is more than 20 degrees, and tomorrow it will become a few degrees, which is unacceptable for a while. There are also many friends around me who express their feelings in the circle of friends. Summer is really a feeling of freezing to death.