Inches -99 1901-2000 base period 1901-2000 10100 Northeast Climate Region 161.68 25 168.06 -6.38 10200 Upper Midwest Climate Region 119.73 57 118.72 1.01 10300 Ohio Valley Climate Region 165.3 36 168.95 -3.65 10400 Southeast Climate Region 191.07 18 201.79 -10.72 10500 Northern Rockies and Plains Climate Region 76.17 71 74.37 1.8 10600 South Climate Region 137.92 48 139.71 -1.79 10700 Southwest Climate Region 57.45 59 58.01 -0.56 10800 Northwest Climate Region 131.54 81 128.4 3.14 10900 West Climate Region 76.15 94 69.56 6.59