2000
november reign
a long december
2001
january 24th is rob's birthday
xmas in february
lousy smarch weather
april showers
may-tastic!
june?
july or tell the truth?
august is the cruellest month
september?
october in the railroad earth
baseball in november?
december will be magic again
2002
january is (just like) starting over
february's not that long
march against the darkness
april fuels enmity
may
keep your fingers crossed for the june swoon
july is national savings month
august 2001 was much more clever
september morn
october gone deep
holy shit it's november!
burning flames in december (http://www.azlyrics.com/lyrics/weezer/december.html)
2003
january is the month that cares (http://www.yimpan.com/Songsite/Lyric/lyric2text.asp?sid=4942)
february stars
march towards victory
april come she will
as we may think
june is totally booked
seemingly nonstop july
august and everything after
september never stays this cold