Weather Systems is the second solo studio album by the American singer-songwriter Andrew Bird.

Released on April 1, 2003, it was his first studio project after disbanding the band Bowl of Fire.

At least two of the songs on the album suggest this fact: "I" is a slower, more dreary version of Armchair Apocrypha's "Imitosis," and "Skin" is a similarly slow, instrumental version of The Mysterious Production of Eggs' "Skin is, My."

The disk features an eight-minute film by Bob Trondson about Bird and the recording of the album.

The first track, "First Song," borrows its title and most of its lyrics from a poem in Galway Kinnell's book, What a Kingdom It Was, published in 1960.