'Ata' b. Abi Rabah reported that he heard 'A'isha, the wife of the Apostle of Allah ﷺ, as saying: 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).

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ بْنِ قَعْنَبٍ، حَدَّثَنَا سُلَيْمَانُ، - يَعْنِي ابْنَ بِلاَلٍ - عَنْ جَعْفَرٍ، - وَهُوَ ابْنُ مُحَمَّدٍ - عَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ، أَنَّهُ سَمِعَ عَائِشَةَ، زَوْجَ النَّبِيِّ ﷺ تَقُولُ كَانَ رَسُولُ اللَّهِ ﷺ إِذَا كَانَ يَوْمُ الرِّيحِ وَالْغَيْمِ عُرِفَ ذَلِكَ فِي وَجْهِهِ أَقْبَلَ وَأَدْبَرَ فَإِذَا مَطَرَتْ سُرَّ بِهِ وَذَهَبَ عَنْهُ ذَلِكَ . قَالَتْ عَائِشَةُ فَسَأَلْتُهُ فَقَالَ " إِنِّي خَشِيتُ أَنْ يَكُونَ عَذَابًا سُلِّطَ عَلَى أُمَّتِي " . وَيَقُولُ إِذَا رَأَى الْمَطَرَ " رَحْمَةٌ" .