What is the function of weather, particularly bad weather, in the novel?Frankenstein by Mary Shelley

The instances of bad weather serve as allegorical literary
techniques that attribute foreshadowing, atmosphere, and Gothic elements. The
foreshadowing comes as a result of the internal turmoil of the two main characters,
Victor and the monster. When the action becomes climatic, the use of nature as a
punisher is part of the Romantic characteristic of Gothic literature which intends that
men and nature are fused together, and what man does, nature will re tribute. The
atmosphere is achieved by presenting bad weather as an inconvenient, limiting,
exasperating, annoying, cold, wet, despicable, reductionist, and untimely event that
goes hand in hand with mental limitations, exasperation, annoyance, coldness, and
hatred.

Finally, the Gothic element of darkness, shock,
inevitability, nature against man, and man against himself are enhanced with the use of
rain and storms as things that push the psyche of the story forwards towards nostalgia
and pessimism.