In the play "Macbeth," the weather serves as a motif that reflects the internal turmoil and moral degradation of the characters. Throughout the play, the weather is depicted as chaotic and tumultuous, mirroring the psychological states of the characters and the corrupt events that take place.
One of the earliest instances of the weather motif in "Macbeth" is when the witches greet Macbeth and Banquo with the line "Fair is foul, and foul is fair" (Act 1, Scene 1). This phrase foreshadows the theme of appearance versus reality that runs throughout the play, and it is also reflected in the bizarre and unsettling weather that the witches conjure.
As Macbeth becomes more deeply ensnared in his own ambition and guilt, the weather becomes increasingly tumultuous. After he murders Duncan, a "great tempest" (Act 2, Scene 3) rages outside, symbolizing the inner turmoil that Macbeth is experiencing. The storm also serves as a metaphor for the moral upheaval that has taken place, as the natural order of things has been disrupted by the murder of the king.
The weather motif reaches its climax in Act 3, Scene 2, when a "foul and tempestuous noise" (Act 3, Scene 2) is heard as Macbeth is crowned king. This serves as a metaphor for the chaos that has been unleashed upon Scotland, as Macbeth's actions have led to a breakdown of the natural order and a descent into moral corruption.
In the final act of the play, the weather becomes even more extreme and chaotic, reflecting the desperation and despair of the characters. As Macbeth is being pursued by his enemies, a "foul and ominous" (Act 5, Scene 3) storm rages, symbolizing the darkness and hopelessness that have taken hold of Scotland.
Overall, the weather motif in "Macbeth" serves as a powerful metaphor for the internal turmoil and moral degradation of the characters. The chaotic and tumultuous weather reflects the psychological states of the characters and the corrupt events that take place, and it serves as a reminder of the destructive power of ambition and guilt.