Some invocations for rain
3 adhkar in their Arabic wording from Hisn al-Muslim, with their English meaning.
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ
Bismillahir-rahmanir-raheem
Each dua: the Arabic, then a transliteration to help you say it aloud, then its meaning.
((اللَّهُمَّ اسْقِنَا غَيْثاً مُغِيثاً مَرِيئاً مَرِيعاً، نَافِعاً غَيْرَ ضَارٍّ، عَاجِلاً غَيْرَ آجِلٍ)).
Allahummasqina ghaythan mugheethan maree'an maree'a, nafi'an ghayra darr, 'ajilan ghayra ajil.
(O Allah, send upon us helpful, wholesome and healthy rain, beneficial not harmful rain, now, not later.)
once((اللَّهُمَّ أَغِثْنَا، اللَّهُمَّ أَغِثْنَا، اللَّهُمَّ أَغِثْنَا)).
Allahumma aghithna, Allahumma aghithna, Allahumma aghithna.
(O Allah, relieve us, O Allah, relieve us, O Allah, relieve us.)
once((اللَّهُمَّ اسْقِ عِبَادَكَ، وَبَهَائِمَكَ، وَانْشُرْ رَحْمَتَكَ، وَأَحْيِي بَلَدَكَ الْمَيِّتَ)).
Allahummasqi 'ibadak, wabaha'imak, wanshur rahmatak, wa ahyee baladakal-mayyit.
(O Allah, provide water for Your servants and Your cattle, spread out Your mercy and resurrect Your dead land.)
once
Source: Hisn al-Muslim by Saʿid ibn ʿAli ibn Wahf al-Qahtani. The Arabic is verbatim from the book; the English meaning is from the hisnmuslim.com English edition. The transliteration is generated by Waqtazan from the voweled Arabic as a reading aid — the Arabic and the recitation remain the reference. Virtues are quoted only from authentic hadith (al-Bukhari, Muslim, or graded sahih/hasan by al-Albani). Recitations: hisnmuslim.com.