haれるreru
1.

To experience the absence of clouds or fog, resulting in clear blue skies and sunny weather.

2.

To have emotional burdens or doubts lifted, leading to a feeling of clarity and relief.

3.

To see a situation or possibility become clearer, often resulting in a sense of hope or optimism.

4.

To have precipitation, such as rain or snow, cease, marking a transition to drier weather.

Example:

明日は晴れるだろう。