The weather component is to maintain them in their liked temperature level zone. They could either go deep, go superficial or shift. Further water is much less had an effect on by the surface area air temperature and is more stable. Superficial water (specifically with a dark bottom) will warm up faster from the Sun's rays, and also cool off much faster from rain as well as God forbid snow. Several varieties migrate to remain in their recommended water temperature level.
Dawn and sunset are without a doubt the ideal times of the day to fish. Fish are commonly most energetic at these times. As an angler you have the benefit that your hook as well as line are not as noticeable as throughout the day and your bait is a lot much more noticeable than during the night. So the edge between light and dark is big.