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 1940

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 1940
1-Month 		2.45"
(62.23mm)		 4.66"
(118.36mm)		 -2.21"
(-56.13mm)		 14th Driest
Driest since:
 1901
115th Wettest
Wettest since:
 2019
Apr–May 1940
2-Month 		6.84"
(173.74mm)		 8.63"
(219.20mm)		 -1.79"
(-45.46mm)		 31st Driest
Driest since:
 1901
98th Wettest
Wettest since:
 2017
Ties: 1924
Mar–May 1940
3-Month 		9.31"
(236.47mm)		 11.84"
(300.74mm)		 -2.53"
(-64.27mm)		 24th Driest
Driest since:
 1936
105th Wettest
Wettest since:
 1973
Ties: 1928
Feb–May 1940
4-Month 		10.84"
(275.34mm)		 13.86"
(352.04mm)		 -3.02"
(-76.70mm)		 17th Driest
Driest since:
 1936
112th Wettest
Wettest since:
 1945
Jan–May 1940
5-Month 		12.20"
(309.88mm)		 15.95"
(405.13mm)		 -3.75"
(-95.25mm)		 17th Driest
Driest since:
 1936
112th Wettest
Wettest since:
 1973
Dec 1939–May 1940
6-Month 		13.62"
(345.95mm)		 18.25"
(463.55mm)		 -4.63"
(-117.60mm)		 9th Driest
Driest since:
 1936
119th Wettest
Wettest since:
 1973
Nov 1939–May 1940
7-Month 		16.22"
(411.99mm)		 21.16"
(537.46mm)		 -4.94"
(-125.47mm)		 12th Driest
Driest since:
 1934
116th Wettest
Wettest since:
 1973
Ties: 1914
Oct 1939–May 1940
8-Month 		18.07"
(458.98mm)		 24.37"
(619.00mm)		 -6.30"
(-160.02mm)		 9th Driest
Driest since:
 1934
119th Wettest
Wettest since:
 1973
Sep 1939–May 1940
9-Month 		18.89"
(479.81mm)		 28.49"
(723.65mm)		 -9.60"
(-243.84mm)		 1st Driest
Driest since:
 1940
127th Wettest
Wettest since:
 1927
Aug 1939–May 1940
10-Month 		23.52"
(597.41mm)		 32.21"
(818.13mm)		 -8.69"
(-220.72mm)		 6th Driest
Driest since:
 1954
122nd Wettest
Wettest since:
 1927
Jul 1939–May 1940
11-Month 		26.47"
(672.34mm)		 35.92"
(912.37mm)		 -9.45"
(-240.03mm)		 6th Driest
Driest since:
 1954
122nd Wettest
Wettest since:
 1927
Jun 1939–May 1940
12-Month 		32.20"
(817.88mm)		 40.52"
(1,029.21mm)		 -8.32"
(-211.33mm)		 9th Driest
Driest since:
 1954
119th Wettest
Wettest since:
 1994
Dec 1938–May 1940
18-Month 		51.81"
(1,315.97mm)		 58.77"
(1,492.76mm)		 -6.96"
(-176.79mm)		 20th Driest
Driest since:
 1954
107th Wettest
Wettest since:
 2020
Jun 1938–May 1940
24-Month 		70.26"
(1,784.60mm)		 81.08"
(2,059.43mm)		 -10.82"
(-274.83mm)		 16th Driest
Driest since:
 1954
111th Wettest
Wettest since:
 1994
Jun 1937–May 1940
36-Month 		110.58"
(2,808.73mm)		 121.61"
(3,088.89mm)		 -11.03"
(-280.16mm)		 16th Driest
Driest since:
 1956
110th Wettest
Wettest since:
 1929
Jun 1936–May 1940
48-Month 		147.80"
(3,754.12mm)		 162.17"
(4,119.12mm)		 -14.37"
(-365.00mm)		 13th Driest
Driest since:
 1956
112th Wettest
Wettest since:
 2011
Jun 1935–May 1940
60-Month 		183.54"
(4,661.92mm)		 202.74"
(5,149.60mm)		 -19.20"
(-487.68mm)		 8th Driest
Driest since:
 1957
116th Wettest
Wettest since:
 2020
Ties: 1981

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