What's the use of poké mon weather?

Sunny day-

Fire attribute skill power × 1.5, water attribute skill power ×0.5, lightning hit rate of 50%, direct emission of solar rays does not accumulate energy, photosynthesis/sunrise/moonlight recovery becomes 2/3 of full blood volume, there will be no freezing state, and chlorophyll characteristic Pokemon speed ×2.

Rainy days-

Water attribute skill strength × 1.5, fire attribute skill strength ×0.5, lightning is necessary, sunlight needs energy storage and strength ×0.5, photosynthesis/sunrise/moonlight recovery becomes 1/4 full blood volume, light Pokemon speed ×2, Pokemon with rain basin characteristics recovers 6.25% blood volume per turn.

Sandstorm day-

The recovery of photosynthesis/sunrise/moonlight becomes the full blood volume of14, and the Pokemon which is not characterized by steel, rock, earth and sand loses 6.25% blood volume per round. The avoidance rate of PM with sand accumulation characteristics has increased by 20%.

Note: after entering NDS version, there is a rock spirit in the attribute, and the sandstorm day special defense is-1.5 times.

Hail day-

The recovery of photosynthesis/sunrise/moonlight becomes 1/4 full blood volume, and the non-ice Pokemon loses 6.25% blood volume per round, so a snowstorm is inevitable. The PM avoidance rate of snow storage characteristics is increased by 20%. At the end of each turn, the spirit with ice body characteristics recovers116 of the maximum blood volume.

Other details have too much influence. If you say it ... no one can have the patience to read it ~