Why do you say "look at the southeast early and the northwest late"? Is there a scientific basis?

Scientific basis of "looking at the southeast early and looking at the northwest late"

The earth itself rotates at a constant speed from west to east, and the air in the atmosphere moves with the earth from west to east. Look southeast early. If the weather in the east is sunny, it means that the bad weather will pass and the weather will get better in the future. If the weather in the east is bad, it is likely to get worse as the weather in the south develops northward. Looking at the northwest at night, dark clouds are rolling in the northwest sky, which indicates that precipitation will move into the local area in the future and the weather will turn bad. If the weather in the northwest is fine, the weather will improve in the future.