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.

Massachusetts

Precipitation Rankings, September 1964

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1964
1-Month 		2.13"
(54.10mm)		 3.79"
(96.27mm)		 -1.66"
(-42.17mm)		 25th Driest
Driest since:
 1914
104th Wettest
Wettest since:
 1938
Ties: 1897, 1931
Aug–Sep 1964
2-Month 		4.32"
(109.73mm)		 7.69"
(195.33mm)		 -3.37"
(-85.60mm)		 11th Driest
Driest since:
 1984
118th Wettest
Wettest since:
 2011
Jul–Sep 1964
3-Month 		7.43"
(188.72mm)		 11.37"
(288.80mm)		 -3.94"
(-100.08mm)		 7th Driest
Driest since:
 1968
122nd Wettest
Wettest since:
 2021
Jun–Sep 1964
4-Month 		9.16"
(232.66mm)		 15.02"
(381.51mm)		 -5.86"
(-148.85mm)		 3rd Driest
Driest since:
 1957
126th Wettest
Wettest since:
 1938
May–Sep 1964
5-Month 		10.20"
(259.08mm)		 18.61"
(472.69mm)		 -8.41"
(-213.61mm)		 1st Driest
Driest since:
 1964
128th Wettest
Wettest since:
 1938
Apr–Sep 1964
6-Month 		14.28"
(362.71mm)		 22.51"
(571.75mm)		 -8.23"
(-209.04mm)		 1st Driest
Driest since:
 1964
128th Wettest
Wettest since:
 1938
Mar–Sep 1964
7-Month 		17.39"
(441.71mm)		 26.45"
(671.83mm)		 -9.06"
(-230.12mm)		 3rd Driest
Driest since:
 1965
126th Wettest
Wettest since:
 1938
Feb–Sep 1964
8-Month 		20.77"
(527.56mm)		 29.66"
(753.36mm)		 -8.89"
(-225.80mm)		 3rd Driest
Driest since:
 1957
126th Wettest
Wettest since:
 2008
Jan–Sep 1964
9-Month 		25.35"
(643.89mm)		 33.30"
(845.82mm)		 -7.95"
(-201.93mm)		 6th Driest
Driest since:
 1957
123rd Wettest
Wettest since:
 2008
Dec 1963–Sep 1964
10-Month 		27.99"
(710.95mm)		 37.13"
(943.10mm)		 -9.14"
(-232.15mm)		 4th Driest
Driest since:
 1957
124th Wettest
Wettest since:
 2008
Nov 1963–Sep 1964
11-Month 		34.70"
(881.38mm)		 41.15"
(1,045.21mm)		 -6.45"
(-163.83mm)		 15th Driest
Driest since:
 1965
113th Wettest
Wettest since:
 2008
Oct 1963–Sep 1964
12-Month 		35.97"
(913.64mm)		 44.66"
(1,134.36mm)		 -8.69"
(-220.72mm)		 7th Driest
Driest since:
 1965
121st Wettest
Wettest since:
 2006
Apr 1963–Sep 1964
18-Month 		52.83"
(1,341.88mm)		 67.07"
(1,703.58mm)		 -14.24"
(-361.70mm)		 4th Driest
Driest since:
 1965
124th Wettest
Wettest since:
 2006
Oct 1962–Sep 1964
24-Month 		77.50"
(1,968.50mm)		 89.25"
(2,266.95mm)		 -11.75"
(-298.45mm)		 9th Driest
Driest since:
 1966
118th Wettest
Wettest since:
 2007
Oct 1961–Sep 1964
36-Month 		116.61"
(2,961.89mm)		 133.88"
(3,400.55mm)		 -17.27"
(-438.66mm)		 6th Driest
Driest since:
 1966
120th Wettest
Wettest since:
 2008
Oct 1960–Sep 1964
48-Month 		159.41"
(4,049.01mm)		 178.50"
(4,533.90mm)		 -19.09"
(-484.89mm)		 12th Driest
Driest since:
 1966
113th Wettest
Wettest since:
 2009
Oct 1959–Sep 1964
60-Month 		213.65"
(5,426.71mm)		 223.10"
(5,666.74mm)		 -9.45"
(-240.03mm)		 31st Driest
Driest since:
 1966
93rd Wettest
Wettest since:
 2010

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