I've seen this song done in the key of F, but I figure why do it the hard way.
This is my way. 
 
 
G5                      C5              D5             G5
 Rain dripping off the brim of my hat sure is cold today
                      C5         D5                           G5 
Here I am walkin down Sixty Six wish she hadn't done me that way
                            C5               D5                G5 
Sleeping under a table in a roadside park a man could wake up dead
                         C5           D5                        G5 
But it sure seems warmer than it did sleeping in our king size bed 
 
(CHORUS) 
G5                  C5             D5         G5
Is anybody goin to San Antone or Phoenix Arizona
                          C5                D5            G5 
Any placi is all right as long as I can forget I've ever known her. 
 
 
(Verse 2 same chords as 1) 
Wind whippin down the neck of my shirt like I aint got nothin on 
But I'd rather fight the wind and rain than what I've been fightin at home 
Yonder comes a truck with the U.S. mail people writin letters back home 
Tommorrow she'll probably want me back but I'll still be just as gone 
 
 
(Repeat Chorus)