no it has int
Yes. In many parts of the world it has often rained on the 25th of December.
it rained 15 times on June 2009 in Canada
No, there is no evidence that it has ever rained in Denmark. But frankly I am not an expert on the matter.
Yes
Alexandria, Egypt receives about 8 inches of rainfall annually.
No, that is just a metaphor meaning "it's raining heavily".
It rains quite often Cambodia, especially during monsoon season.
Rained
The past tense of "rain" would be "rained".It rained is the past tense
it always rained
'It was a dreadful winter that year. It rained and rained and rained for two long months.'