It's September. Why is it still so hot? Somebody give me an explanation. ...

There are many reasons for the hot weather. Here are some possible reasons:

1. Seasonal variation: Summer is the hottest season in the whole year, especially in the northern hemisphere. Although it is autumn, the climate in some areas may still be very hot.

2. Latitude: Due to geographical location and latitude, some areas may be very hot even in autumn. For example, equatorial regions are usually hotter than other regions because they are close to the equatorial line of the earth.

3. Climate change: Global warming is one of the reasons why hot weather is becoming more and more frequent. Due to the increase of greenhouse gases in the atmosphere, the temperature of the earth is rising, which leads to hotter weather.

4. High-pressure system: Under the control of the high-pressure system, the air sinks and heats up, resulting in hot and dry weather. These high-pressure systems usually appear in summer and early autumn.

5. Urban heat island effect: Because artificial surfaces such as buildings and roads in cities absorb and store heat, the temperature in urban areas is higher than that in surrounding rural or natural areas. This is one of the reasons why cities are hotter than rural areas.

To sum up, the hot weather may be caused by many factors. Although it has entered autumn, the weather may still be very hot in some areas and situations.