After a few days, the weather will get cold and the water temperature will drop.

One day. Cooling means lowering the temperature. Common weather and climate cooling, day and night cooling, cold and summer cooling, four seasons cooling. The water temperature has an obvious lag effect on the temperature, and most of them begin to drop the next day after the temperature drops, so it will drop after one day, and the surface water temperature will drop first. On the day of cooling, the water temperature was still relatively stable and there was no big change.