This is my first tab....so don't be critical........:)
Just listen to the song for the rithm....

Intro
Am   F   C   G 

C
Someone told me long ago
C
There's a calm before the storm
G                         C
I know - It's been coming for some time
C
When it's over so they say
C
It'll rain a sunny day
G                          G
I know - shining down like water

Chorus:
F         G
I want to know
         C             Am
have you ever seen the rain
F
I want to know
         C             Am      F
Have you ever seen the rain
       G               G
comin' down on a sunny day

Same goes for the next part...