Standardized Precipitation Index Table

West Ozarks Climate Division

Missouri, Climate Division 04

Precipitation Data Table

Time Scale in Months (As of the end of May 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 7.03 16.82 18.79 19.96 21.53 23.79 31.19 32.8 34.25 37.14 42.26 47.01 62.38 69.04 88.8 110.01 128.64 178.63 223.91 286.25
Accumulated Precipitation Departure from Normal (in.) 1.74 7.16 5.5 4.46 3.79 3.42 7.59 5.65 3.02 2.19 3.57 3.56 5.68 5.34 2.02 3.01 -1.46 5.19 7.23 26.28
Accumulated Precipitation Percent of Average 133 174 141 129 121 117 132 121 110 106 109 108 110 108 102 103 99 103 103 110
Accumulated Precipitation Percentile (non-exceedance) 79 97.4 90.8 85.3 80.2 76.7 90.7 83.6 70.2 64.9 71 69.8 75.5 72.5 58.8 60.9 47.2 63.6 66.2 90
Standardized Precipitation Index 0.81 1.94 1.33 1.05 0.85 0.73 1.32 0.98 0.53 0.38 0.55 0.52 0.69 0.6 0.22 0.28 -0.07 0.35 0.42 1.28