Consider the following premises. It is overcast or it is not cold. It is sunny. If it is sunny, then it is overcast. If Sarah works, then it is cold. Can we infer the following from them? It is not overcast.
 From the fact that it is sunny we can infer that it is sunny or Sarah is working. From the fact that it is overcast or it is not cold we can infer that if it is cold, then it is overcast. From the fact that if Sarah works, then it is cold, and that if it is cold, then it is overcast we can infer that if Sarah works, then it is overcast. Finally, from the fact that if it is sunny, then it is overcast, that if Sarah works, then it is overcast, and that it is sunny or Sarah is working we can infer that it is overcast, which contradicts that It is not overcast. Therefore, the answer is no.