Standardized Precipitation Index Table

West Central Plains Climate Division

Missouri, Climate Division 03

Precipitation Data Table

Time Scale in Months (As of the end of Apr. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 8.83 12.38 13.89 14.91 15.12 17.93 20.68 23.19 24.38 28.87 35.55 40.12 51.14 58.51 81.25 97.9 117.3 153.25 194.92 238.07
Accumulated Precipitation Departure from Normal (in.) 4.75 5.24 4.94 4.19 2.35 2.53 1.85 0.15 -2.46 -1.77 -0.05 -0.51 1.6 2.53 0.01 1.39 -4.49 -9.17 -8.11 -5.62
Accumulated Precipitation Percent of Average 217 173 155 139 118 116 110 101 91 94 100 99 103 105 100 101 96 94 96 98
Accumulated Precipitation Percentile (non-exceedance) 97.9 96.1 95 90.9 77.9 75.5 69.4 54.1 34.1 41 52.2 49.6 59.9 63 51.8 56.3 38 28.1 32.5 39
Standardized Precipitation Index 2.04 1.76 1.64 1.33 0.77 0.69 0.51 0.1 -0.41 -0.23 0.06 -0.01 0.25 0.33 0.05 0.16 -0.31 -0.58 -0.45 -0.28