Final answer:
The sentence expresses unfavorable weather conditions.
Step-by-step explanation:
The given sentence 'With the rain and wind, it was a terrible day' expresses that the weather conditions were unfavorable and made the day unpleasant.
The word 'coming' in the question can be replaced with the word 'approaching' to convey the same meaning. For example, 'With the approaching rain and wind, it was a terrible day.'