It's raining men is actually about fear of nuclear war. The song title is a metaphor for nuclear bombs.

In regards to the apocalypse, there's a stanza or two from Genesis's epic "Supper's Ready" that stand out:

...With the guards of Magog, swarming around,
The Pied Piper takes his children underground.
Dragons coming out of the sea,
Shimmering silver head of wisdom looking at me.
He brings down the fire from the skies,
You can tell he's doing well by the look in human eyes.
Better not compromise.
It won't be easy.

666 is no longer alone,
He's getting out the marrow in your back bone,
And the seven trumpets blowing sweet rock and roll,
Gonna blow right down inside your soul.
Pythagoras with the looking glass reflects the full moon,
In blood, he's writing the lyrics of a brand new tune.

And it's hey babe, with your guardian eyes so blue,
Hey my baby, don't you know our love is true.
I've been so far from here,
Far from your loving arms,
Now I'm back again, and babe it's gonna work out fine...

I think 'A Hard Rain's A Gonna Fall' by Dylan is the most striking lyrically. When Allen Ginsburg, perhaps the best of the Beat Poets, heard it, he wept.

Oh, where have you been, my blue-eyed son?
Oh, where have you been, my darling young one?
I've stumbled on the side of twelve misty mountains,
I've walked and I've crawled on six crooked highways,
I've stepped in the middle of seven sad forests,
I've been out in front of a dozen dead oceans,
I've been ten thousand miles in the mouth of a graveyard,
And it's a hard, and it's a hard, it's a hard, and it's a hard,
And it's a hard rain's a-gonna fall.

Oh, what did you see, my blue-eyed son?
Oh, what did you see, my darling young one?
I saw a newborn baby with wild wolves all around it
I saw a highway of diamonds with nobody on it,
I saw a black branch with blood that kept drippin',
I saw a room full of men with their hammers a-bleedin',
I saw a white ladder all covered with water,
I saw ten thousand talkers whose tongues were all broken,
I saw guns and sharp swords in the hands of young children,
And it's a hard, and it's a hard, it's a hard, it's a hard,
And it's a hard rain's a-gonna fall.

And what did you hear, my blue-eyed son?
And what did you hear, my darling young one?
I heard the sound of a thunder, it roared out a warnin',
Heard the roar of a wave that could drown the whole world,
Heard one hundred drummers whose hands were a-blazin',
Heard ten thousand whisperin' and nobody listenin',
Heard one person starve, I heard many people laughin',
Heard the song of a poet who died in the gutter,
Heard the sound of a clown who cried in the alley,
And it's a hard, and it's a hard, it's a hard, it's a hard,
And it's a hard rain's a-gonna fall.

Oh, who did you meet, my blue-eyed son?
Who did you meet, my darling young one?
I met a young child beside a dead pony,
I met a white man who walked a black dog,
I met a young woman whose body was burning,
I met a young girl, she gave me a rainbow,
I met one man who was wounded in love,
I met another man who was wounded with hatred,
And it's a hard, it's a hard, it's a hard, it's a hard,
It's a hard rain's a-gonna fall.

Oh, what'll you do now, my blue-eyed son?
Oh, what'll you do now, my darling young one?
I'm a-goin' back out 'fore the rain starts a-fallin',
I'll walk to the depths of the deepest black forest,
Where the people are many and their hands are all empty,
Where the pellets of poison are flooding their waters,
Where the home in the valley meets the damp dirty prison,
Where the executioner's face is always well hidden,
Where hunger is ugly, where souls are forgotten,
Where black is the color, where none is the number,
And I'll tell it and think it and speak it and breathe it,
And reflect it from the mountain so all souls can see it,
Then I'll stand on the ocean until I start sinkin',
But I'll know my song well before I start singin',
And it's a hard, it's a hard, it's a hard, it's a hard,
It's a hard rain's a-gonna fall.

Hellz yeah. Classic.

hella old school but still totally on the mark

I think there's lots of them.

Good call! It's the perfect song for this.

Bob takes the apocalypse with humor.

how far we've come by matchbox twenty.

Hell is Here by Saves The Day. A rather depressing song