My Master, the Rainmaker

When Jeannie and Tony decide to go on a picnic, it starts to heavily rain ruining their plan. Jeannie then blinks and makes it sunny again. Tony is then amazed that Jeannie can control the weather so he inadvertedly wishes it could snow. When Jeannie makes it snow Dr. Bellows arrives rousing his suspicion and now quite a few people on the base think Tony can control the weather.