Final answer:
Lockwood is forced to spend the night at Wuthering Heights because he is snowed in due to a storm.
Step-by-step explanation:
Lockwood ultimately ends up spending the night at Wuthering Heights because he is snowed in as a result of a storm. This event takes place in Emily Brontë's novel "Wuthering Heights," when the character Mr. Lockwood, a tenant at Thrushcross Grange, visits his landlord, Heathcliff, at Wuthering Heights. Due to the inclement weather and the heavy snowfall, Lockwood is unable to return to his own residence and thus is compelled to stay overnight at the eerie and unwelcoming Wuthering Heights.