"I believe it will rain tomorrow, but it will not rain tomorrow"

The statement "I believe it will rain tomorrow, but it will not rain tomorrow" combines a personal belief with a factual prediction. It means that the speaker expects rain based on their judgment or information, but in reality, rain will not occur. This highlights the difference between beliefs—which are subjective assessments—and objective facts, which are independent of personal opinions. Essentially, the speaker is expressing their expectation despite knowing that the actual weather outcome will be different, illustrating the distinction between what someone thinks might happen and what actually occurs.