Weather Conditions in Battle:

Harsh Sunlight - The harsh sunlight weather condition. It boosts the power of Fire-type and Light-type moves and lowers the power of Water-type and Dark-type moves. It boosts the Speed of Plant-type user.

Rain - The rain weather condition. It boosts the power of Water-type moves and lowers the power of Fire-type and Light-type moves.

Sandstorm - The sandstorm weather condition. At the end of each turn, it damages all user that are not Earth, Terrain, or Steel types. It boosts the Sp. Def of Earth-type user.

Hail - The hail weather condition. At the end of each turn, it damages all user that are not Ice types.

Snow - The snow weather condition. It makes Blizzard more likely to hit and boosts the Defense of Ice-type user.

Fog - All moves are less accurate, apart from moves that are always sure to hit.

Extremely Harsh Sunlight - The extremely harsh sunlight weather condition. It boosts the power of Fire-type and Light-type moves and protects user from Water-type and Dark-type moves.

Thunderstorm - The thunderstorm weather condition. It boosts the power of Water-type, Bolt-type, and Dark-type moves and lowers the power of Light-type moves and protects user from Fire-type moves.

Hurricane - The hurricane weather condition. The power of moves that are super effective against Air-type user is decreased.

Solar Eclipse - The solar eclipse weather condition. This weather effect caused demons and hybrid demons go berserk.

Harsh Sunlight, Rain, Fog naturally occurs outside of desert and snow area

Extremely Harsh Sunlight, and Thunderstorm rarely naturally occurs outside of desert and snow area

Hurricane rarely naturally occurs near beach and ocean

Sandstorm naturally occurs on desert area

Snow and Hail naturally occurs on snow area

Solar Eclipse naturally occurs every 18 months, max 5 per year

Fire-type and Light-type users can learn Sunny Day to summon Harsh Sunlight

Water-type users can learn Rain Dance to summon Rain

Terrain-type and Earth-type users can learn Sandstorm to summon Sandstorm

Ice-type users can learn Hail to summon Hail and Snowscape, and Chilly Reception to summon Snow

XML can learn Sunny Day if he obtained Light of Orb

T.XML can learn Rain Dance if he obtained Darkness of Orb