In my last post, I analyzed the homefield advantage of playoff teams in the 2nd and 3rd rounds since 2000.   I found that the home team record was 34-20.  Someone suggested that I look to see how much cold weather might have affected that, so here goes.  Now I'm not going to go and look up weather reports, so I'll just have to guess based on Geography- basically, my cut off will be San Francisco, Tennessee, and Carolina (such that any teams not in a dome and north of Tennesse and Carolina, or SF on the West Coast will be considered cold weather for the purpose of this analysis). 

All Divisional and Conference Championship round playoff games, chronologically, since 2000:

2000

NO 16 @ MIN 34

MIA 0 @ OAK 27

BAL 24 @ TEN 10

PHI 10 @ NYG 20 COLD WEATHER

MIN 0 @ NYG 41 COLD WEATHER *

BAL 16 @ OAK 3

2001

PHI 33 @ CHI 19  COLD WEATHER

OAK 13 @ NE 16 COLD WEATHER *

BAL 10 @ PIT 27  COLD WEATHER

GB 17 @ STL 45

NE 24 @ PIT 17 COLD WEATHER

PHI 24 @ STL 29

2002

PIT 31 @ TEN 34

ATL 6 @ PHI 20  COLD WEATHER *

SF 6 @ TB 31

NYJ 10 @ OAK 30

TB 27 @ PHI 10  COLD WEATHER *

TEN 24 @ OAK 41

2003

CAR 29 @ STL 23

TEN 14 @ NE 17  COLD WEATHER *

IND 38 @ KC 31  COLD WEATHER *

GB 17 @ PHI 20  COLD WEATHER

IND 14 @ NE 24 COLD WEATHER *

CAR 14 @ PHI 3 COLD WEATHER *

2004

NYJ 17 @ PIT 20  COLD WEATHER

STL 17 @ ATL 47

MIN 14 @ PHI 27  COLD WEATHER *

IND 3 @ NE 20  COLD WEATHER *

ATL 10 @ PHI 27 COLD WEATHER *

NE 41 @ PIT 27 COLD WEATHER

2005

WAS 10 @ SEA 20  COLD WEATHER

NE 13 @ DEN 27  COLD WEATHER

PIT 21 @ IND 18

CAR 29 @ CHI 21  COLD WEATHER *

PIT 34 @ DEN 17 COLD WEATHER

CAR 14 @ SEA 34 COLD WEATHER *

2006

IND 15 @ BAL 6 COLD WEATHER *

PHI 24 @ NO 27

SEA 24 @ CHI 27 COLD WEATHER

NE 24 @ SD 21

NO 14 @ CHI 39  COLD WEATHER *

NE 34 @ IND 38

2007

SEA 20 @ GB 42  COLD WEATHER

JAC 20 @ NE 31 COLD WEATHER *

SD 28 @ IND 24

NYG 21 @ DAL 17

SD 12 @ NE 21  COLD WEATHER *

NYG 23 @ GB 20  COLD WEATHER

2008

BAL 13 @ TEN 10

ARI 33 @ CAR 13

PHI 23 @ NYG 11  COLD WEATHER

SD 24 @ PIT 35  COLD WEATHER *

PHI 25 @ ARI 32

BAL 14 @ PIT 23  COLD WEATHER

Note: Asterisk (*) denotes the cold weather home team playing against a warm weather/dome away team

So what can we learn here?  Cold weather home teams are 22-11.  Not surprisingly, that's a better percentage (.666) than the overall home team (at .629629).  If we only look at cold weather teams hosting warm weather/dome teams, the record is 13-5, for an even better percentage of .722. 

That leaves the warm weather hosting home record of 12-9 (.571).  Just for kicks, if we look just at dome hosting teams, the record is 5-3 (.625).

Overall, this probably doesn't tell us anything we wouldn't have already suspected- that is, that cold weather home teams have a bigger advantage than warm weather home teams, and cold weather home teams have an even bigger advantage when hosting warm weather away teams. 

Thoughts?