Standardized Precipitation Index Table

West Ozarks Climate Division

Missouri, Climate Division 04

Precipitation Data Table

Time Scale in Months (As of the end of Jul. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.72 6.26 14.87 19.92 27.58 30.82 36.27 37.85 41.84 49.58 51.64 57.78 81.2 91.89 115.69 139.04 154.15 203.26 256.81 307.99
Accumulated Precipitation Departure from Normal (in.) 0 -2.26 1.12 1.84 5.91 6.93 10.15 9.13 9.89 14.12 12.03 14.44 24.12 24.71 29.18 28.77 24.62 30.71 41.32 49.59
Accumulated Precipitation Percent of Average 100 73 108 110 127 129 139 132 131 140 130 133 142 137 134 126 119 118 119 119
Accumulated Precipitation Percentile (non-exceedance) 56.3 24.1 64.1 68.1 86.6 88.8 94.4 91.6 92.2 97.2 94.3 96.2 99.4 99.1 99.2 98.5 95.9 96.9 98.7 99.2
Standardized Precipitation Index 0.16 -0.7 0.36 0.47 1.11 1.21 1.59 1.38 1.42 1.91 1.58 1.78 2.5 2.37 2.42 2.17 1.73 1.87 2.22 2.43