When there was on any day windstorm or dark cloud (its effects) could be read on the face of the Messenger of Allah ﷺ, and he moved forward and backward (in a state of anxiety) ; and when it rained, he was delighted and it (the state of restlessness) disappeared. 'A'isha said: I asked him the reason of this anxiety and he said: I was afraid that it might be a calamity that might fall upon my Ummah, and when he saw rainfall he said: It is the mercy (of Allah). (Using translation from Muslim 899a)   

أَنَّهُ سَمِعَ عَائِشَةَ زَوْجَ النَّبِيِّ ﷺ تَقُولُ كَانَ رَسُولُ اللهِ ﷺ إِذَا كَانَ يَوْمُ الرِّيحِ وَالْغَيْمِ عُرِفَ ذَلِكَ فِي وَجْهِهِ فَأَقْبَلَ وَأَدْبَرَ وَإِذَا مُطِرَ سُرَّ بِهِ وَذَهَبَ عَنْهُ ذَلِكَ قَالَتْ عَائِشَةُ فَسَأَلْتُهُ؟ فَقَالَ إِنِّي خَشِيتُ أَنْ يَكُونَ عَذَابًا سُلِّطَ عَلَى أُمَّتِي وَيَقُولُ إِذَا رَأَى الْمَطَرَ رَحْمَةٌ وَفِي رِوَايَةِ مُعَاذٍ سُرِّيَ وَذَهَبَ عَنْهُ ذَلِكَ  

[Machine] That whenever the Messenger of Allah ﷺ saw rain, he would say, "O Allah, a beneficial shower."  

أَنَّ رَسُولَ اللهِ ﷺ كَانَ إِذَا رَأَى الْمَطَرَ قَالَ اللهُمَّ صَيِّبًا هَنِيئًا  

[Machine] When the Prophet ﷺ saw clouds or a mirage, he became startled. And when it rained, he would pray: "O Allah, let it be a beneficial rain."  

كَانَ رَسُولُ اللهِ ﷺ إِذَا رَأَى سَحَابًا أَوْ مَخِيلَةً فَزِعَ فَإِذَا مُطِرَ قَالَ اللهُمَّ سَقْيًا نَافِعًا