June 1981 - May 1985 Climate Regions Precipitation Inches -99 1901-2000 base period 1901-2000 10100 Northeast Climate Region 175.21 87 168.06 7.15 10200 Upper Midwest Climate Region 133.38 116 118.72 14.66 10300 Ohio Valley Climate Region 180.4 101 168.95 11.45 10400 Southeast Climate Region 203.82 74 201.79 2.03 10500 Northern Rockies and Plains Climate Region 78.06 90 74.37 3.69 10600 South Climate Region 146.19 87 139.71 6.48 10700 Southwest Climate Region 69.22 119 58.01 11.21 10800 Northwest Climate Region 147.86 118 128.4 19.46 10900 West Climate Region 87.6 119 69.56 18.04