Consider the following premises. Jessica is making tea. If Sarah were a sailor, then it is sunny. Sarah is a sailor if and only if it is snowing. It is not sunny. Can we infer the following from them? It is snowing.
 From the fact that if Sarah were a sailor, then it is sunny, and that it is not sunny we can infer that Sarah is not a sailor. Finally, from the fact that Sarah is a sailor if and only if it is snowing, and that Sarah is not a sailor we can infer that it is not snowing, which contradicts that It is snowing. Therefore, the answer is no.