The Rain
Scholars have said that seeing rain can indicate harm and distress if one is trapped by it, or illness if one is sick. However, rain can be seen as positive in cases like performing ablution for prayer or the success of a request to an authority. Ibn Sirin also noted that the term "rain" in the Quran is often associated with sorrow, whereas if not explicitly called "rain," it might signify relief and blessed provision.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam