Idaho, Precipitation, 18-Month Period Ending in May Inches 1901-1965 -99 189705 44.40 6.40 189805 39.15 1.15 189905 33.77 -4.23 190005 35.69 -2.31 190105 36.41 -1.59 190205 36.03 -1.97 190305 37.91 -0.09 190405 43.68 5.68 190505 36.95 -1.05 190605 36.65 -1.35 190705 44.82 6.82 190805 41.26 3.26 190905 39.47 1.47 191005 43.01 5.01 191105 36.75 -1.25 191205 38.86 0.86 191305 39.59 1.59 191405 38.59 0.59 191505 35.23 -2.77 191605 39.42 1.42 191705 42.69 4.69 191805 37.85 -0.15 191905 37.01 -0.99 192005 31.08 -6.92 192105 40.83 2.83 192205 40.82 2.82 192305 36.91 -1.09 192405 36.25 -1.75 192505 33.83 -4.17 192605 38.54 0.54 192705 39.03 1.03 192805 41.92 3.92 192905 30.16 -7.84 193005 32.41 -5.59 193105 33.96 -4.04 193205 32.80 -5.20 193305 38.95 0.95 193405 33.22 -4.78 193505 35.16 -2.84 193605 32.63 -5.37 193705 34.53 -3.47 193805 40.20 2.20 193905 38.57 0.57 194005 33.13 -4.87 194105 40.97 2.97 194205 40.18 2.18 194305 42.22 4.22 194405 34.70 -3.30 194505 34.68 -3.32 194605 39.32 1.32 194705 38.90 0.90 194805 38.27 0.27 194905 39.37 1.37 195005 37.39 -0.61 195105 41.43 3.43 195205 39.80 1.80 195305 37.99 -0.01 195405 37.97 -0.03 195505 34.56 -3.44 195605 40.98 2.98 195705 43.34 5.34 195805 40.25 2.25 195905 40.45 2.45 196005 37.68 -0.32 196105 34.04 -3.96 196205 36.51 -1.49 196305 38.43 0.43 196405 39.16 1.16 196505 44.53 6.53