I can tell you your home humidity in the winter will never even come close the the outside humidity in the winter time. The chart below is good example of the outside humidity today so far since midnight and updated every ten minutes since. These reading are directly from my weather station at my home which is uploaded to the wundrground.
http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KMNRICE1
You will find the humidity in the second to the last column
Tabular Data for January 4, 2010
Time, Temp. Dew Point, Pressure, Wind Wind Humidity
00:02 -23.2 °F -30.9 °F 30.58in Calm 0.0mph 66% 0.00in
00:12 -23.9 °F -31.3 °F 30.58in Calm 0.0mph 67% 0.00in
00:22 -24.2 °F -31.6 °F 30.58in Calm 0.0mph 67% 0.00in
00:32 -24.2 °F -31.6 °F 30.58in Calm 0.0mph 67% 0.00in
00:42 -24.2 °F -31.6 °F 30.58in Calm 0.0mph 67% 0.00in
00:52 -24.6 °F -32.3 °F 30.56in Calm 0.0mph 66% 0.00in
01:00 -25.6 °F -33.2 °F 30.56in Calm 0.0mph 66% 0.00in
01:02 -24.9 °F -32.6 °F 30.56in Calm 0.0mph 66% 0.00in
01:12 -24.9 °F -32.6 °F 30.56in Calm 0.0mph 66% 0.00in
01:22 -25.3 °F -32.9 °F 30.56in Calm 0.0mph 66% 0.00in
01:32 -25.3 °F -33.2 °F 30.55in Calm 0.0mph 65% 0.00in
01:42 -26.0 °F -33.6 °F 30.55in Calm 0.0mph 66% 0.00in
01:52 -26.0 °F -33.6 °F 30.56in Calm 0.0mph 66% 0.00in
02:02 -25.6 °F -33.2 °F 30.56in Calm 0.0mph 66% 0.00in
02:12 -25.6 °F -33.2 °F 30.56in Calm 0.0mph 66% 0.00in
02:22 -25.6 °F -33.2 °F 30.57in Calm 0.0mph 66% 0.00in
02:32 -25.6 °F -33.2 °F 30.56in Calm 0.0mph 66% 0.00in
02:42 -25.6 °F -33.2 °F 30.56in Calm 0.0mph 66% 0.00in
02:52 -26.0 °F -33.9 °F 30.57in Calm 0.0mph 65% 0.00in
03:00 -27.7 °F -35.8 °F 30.55in Calm 1.0mph 64% 0.00in
03:02 -26.0 °F -33.6 °F 30.56in Calm 0.0mph 66% 0.00in
03:12 -27.0 °F -35.1 °F 30.56in Calm 0.0mph 64% 0.00in
03:22 -27.0 °F -34.8 °F 30.56in Calm 0.0mph 65% 0.00in
03:32 -27.7 °F -35.8 °F 30.55in Calm 0.0mph 64% 0.00in
03:42 -27.7 °F -35.5 °F 30.55in Calm 0.0mph 65% 0.00in
03:52 -27.0 °F -34.6 °F 30.56in Calm 0.0mph 66% 0.00in
04:02 -27.3 °F -35.4 °F 30.55in Calm 0.0mph 64% 0.00in
04:12 -27.3 °F -35.1 °F 30.55in Calm 0.0mph 65% 0.00in
04:22 -27.3 °F -35.4 °F 30.55in Calm 0.0mph 64% 0.00in
04:32 -27.7 °F -35.8 °F 30.55in Calm 1.0mph 64% 0.00in
04:42 -27.7 °F -35.5 °F 30.55in Calm 1.0mph 65% 0.00in
04:52 -28.0 °F -36.1 °F 30.57in Calm 1.0mph 64% 0.00in
05:00 -27.7 °F -35.5 °F 30.58in Calm 0.0mph 65% 0.00in
05:02 -28.4 °F -36.7 °F 30.56in Calm 1.0mph 63% 0.00in
05:12 -28.7 °F -36.7 °F 30.56in Calm 1.0mph 64% 0.00in
05:22 -28.7 °F -36.7 °F 30.57in Calm 1.0mph 64% 0.00in
05:32 -29.0 °F -37.3 °F 30.57in Calm 1.0mph 63% 0.00in
05:42 -28.7 °F -36.5 °F 30.57in Calm 1.0mph 65% 0.00in
05:52 -28.4 °F -36.2 °F 30.58in Calm 1.0mph 65% 0.00in
06:02 -28.0 °F -35.8 °F 30.58in Calm 1.0mph 65% 0.00in
06:12 -28.0 °F -36.1 °F 30.58in Calm 1.0mph 64% 0.00in
06:22 -27.7 °F -35.5 °F 30.58in Calm 1.0mph 65% 0.00in
06:32 -27.7 °F -35.5 °F 30.57in Calm 0.0mph 65% 0.00in
06:42 -27.7 °F -35.5 °F 30.57in Calm 0.0mph 65% 0.00in
06:52 -28.0 °F -36.1 °F 30.58in Calm 0.0mph 64% 0.00in
07:00 -26.3 °F -33.9 °F 30.59in Calm 0.0mph 66% 0.00in
07:02 -28.4 °F -36.5 °F 30.58in Calm 0.0mph 64% 0.00in
07:12 -28.4 °F -36.5 °F 30.58in Calm 0.0mph 64% 0.00in
07:22 -28.4 °F -35.9 °F 30.58in Calm 0.0mph 66% 0.00in
07:32 -27.7 °F -35.2 °F 30.58in Calm 0.0mph 66% 0.00in
07:42 -27.0 °F -34.6 °F 30.58in Calm 0.0mph 66% 0.00in
07:52 -26.6 °F -34.2 °F 30.59in Calm 0.0mph 66% 0.00in
08:02 -26.3 °F -33.9 °F 30.60in Calm 0.0mph 66% 0.00in
08:12 -26.6 °F -34.2 °F 30.60in Calm 0.0mph 66% 0.00in
08:22 -26.6 °F -34.2 °F 30.60in Calm 0.0mph 66% 0.00in
08:32 -26.3 °F -33.9 °F 30.59in Calm 0.0mph 66% 0.00in
08:41 -25.6 °F -33.0 °F 30.59in Calm 0.0mph 67% 0.00in