Consider the following premises. Linda is not climbing a mountain. It is cold if and only if Linda is climbing a mountain. If it is late, then it is cold. It is sunny if and only if it is late. Can we infer the following from them? It is not sunny or it is snowing.
 From the fact that it is cold if and only if Linda is climbing a mountain, and that Linda is not climbing a mountain we can infer that it is not cold. From the fact that if it is late, then it is cold, and that it is not cold we can infer that it is not late. From the fact that it is sunny if and only if it is late, and that it is not late we can infer that it is not sunny. Finally, from the fact that it is not sunny we can infer that it is not sunny or it is snowing. Therefore, the answer is yes.