Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Missouri

Precipitation Rankings, May 2020

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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 2020
1-Month 		6.26"
(159.00mm)		 4.66"
(118.36mm)		 1.60"
(40.64mm)		 101st Driest
Driest since:
 1901
28th Wettest
Wettest since:
 2019
Ties: 2022
Apr–May 2020
2-Month 		10.24"
(260.10mm)		 8.63"
(219.20mm)		 1.61"
(40.90mm)		 91st Driest
Driest since:
 1901
38th Wettest
Wettest since:
 2017
Mar–May 2020
3-Month 		15.75"
(400.05mm)		 11.84"
(300.74mm)		 3.91"
(99.31mm)		 111th Driest
Driest since:
 1936
18th Wettest
Wettest since:
 1973
Feb–May 2020
4-Month 		18.26"
(463.80mm)		 13.86"
(352.04mm)		 4.40"
(111.76mm)		 112th Driest
Driest since:
 1936
17th Wettest
Wettest since:
 1945
Jan–May 2020
5-Month 		22.67"
(575.82mm)		 15.95"
(405.13mm)		 6.72"
(170.69mm)		 120th Driest
Driest since:
 1936
9th Wettest
Wettest since:
 1973
Dec 2019–May 2020
6-Month 		24.34"
(618.24mm)		 18.25"
(463.55mm)		 6.09"
(154.69mm)		 115th Driest
Driest since:
 1936
13th Wettest
Wettest since:
 1973
Nov 2019–May 2020
7-Month 		27.21"
(691.13mm)		 21.16"
(537.46mm)		 6.05"
(153.67mm)		 112th Driest
Driest since:
 1934
16th Wettest
Wettest since:
 1973
Oct 2019–May 2020
8-Month 		32.21"
(818.13mm)		 24.37"
(619.00mm)		 7.84"
(199.13mm)		 118th Driest
Driest since:
 1934
10th Wettest
Wettest since:
 1973
Sep 2019–May 2020
9-Month 		35.49"
(901.45mm)		 28.49"
(723.65mm)		 7.00"
(177.80mm)		 116th Driest
Driest since:
 1940
12th Wettest
Wettest since:
 1927
Aug 2019–May 2020
10-Month 		41.65"
(1,057.91mm)		 32.21"
(818.13mm)		 9.44"
(239.78mm)		 123rd Driest
Driest since:
 1954
5th Wettest
Wettest since:
 1927
Jul 2019–May 2020
11-Month 		46.13"
(1,171.70mm)		 35.92"
(912.37mm)		 10.21"
(259.33mm)		 123rd Driest
Driest since:
 1954
5th Wettest
Wettest since:
 1927
Jun 2019–May 2020
12-Month 		51.84"
(1,316.74mm)		 40.52"
(1,029.21mm)		 11.32"
(287.53mm)		 122nd Driest
Driest since:
 1954
6th Wettest
Wettest since:
 1994
Dec 2018–May 2020
18-Month 		80.19"
(2,036.83mm)		 58.77"
(1,492.76mm)		 21.42"
(544.07mm)		 126th Driest
Driest since:
 1954
1st Wettest
Wettest to Date
 2020
Jun 2018–May 2020
24-Month 		102.97"
(2,615.44mm)		 81.08"
(2,059.43mm)		 21.89"
(556.01mm)		 125th Driest
Driest since:
 1954
2nd Wettest
Wettest since:
 1994
Jun 2017–May 2020
36-Month 		139.07"
(3,532.38mm)		 121.61"
(3,088.89mm)		 17.46"
(443.49mm)		 115th Driest
Driest since:
 1956
11th Wettest
Wettest since:
 1929
Jun 2016–May 2020
48-Month 		185.98"
(4,723.89mm)		 162.17"
(4,119.12mm)		 23.81"
(604.77mm)		 114th Driest
Driest since:
 1956
11th Wettest
Wettest since:
 2011
Jun 2015–May 2020
60-Month 		238.94"
(6,069.08mm)		 202.74"
(5,149.60mm)		 36.20"
(919.48mm)		 123rd Driest
Driest since:
 1957
1st Wettest
Wettest to Date
 2020

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