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 2009

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 2009
1-Month 		2.11"
(53.59mm)		 3.79"
(96.27mm)		 -1.68"
(-42.68mm)		 24th Driest
Driest since:
 1914
105th Wettest
Wettest since:
 1938
Aug–Sep 2009
2-Month 		6.83"
(173.48mm)		 7.69"
(195.33mm)		 -0.86"
(-21.85mm)		 55th Driest
Driest since:
 1984
74th Wettest
Wettest since:
 2011
Jul–Sep 2009
3-Month 		15.41"
(391.41mm)		 11.37"
(288.80mm)		 4.04"
(102.61mm)		 113th Driest
Driest since:
 1968
16th Wettest
Wettest since:
 2021
Jun–Sep 2009
4-Month 		21.01"
(533.65mm)		 15.02"
(381.51mm)		 5.99"
(152.14mm)		 121st Driest
Driest since:
 1957
8th Wettest
Wettest since:
 1938
May–Sep 2009
5-Month 		24.84"
(630.94mm)		 18.61"
(472.69mm)		 6.23"
(158.25mm)		 119th Driest
Driest since:
 1964
10th Wettest
Wettest since:
 1938
Apr–Sep 2009
6-Month 		29.00"
(736.60mm)		 22.51"
(571.75mm)		 6.49"
(164.85mm)		 118th Driest
Driest since:
 1964
11th Wettest
Wettest since:
 1938
Mar–Sep 2009
7-Month 		32.02"
(813.31mm)		 26.45"
(671.83mm)		 5.57"
(141.48mm)		 112th Driest
Driest since:
 1965
17th Wettest
Wettest since:
 1938
Ties: 1955
Feb–Sep 2009
8-Month 		33.81"
(858.77mm)		 29.66"
(753.36mm)		 4.15"
(105.41mm)		 102nd Driest
Driest since:
 1957
27th Wettest
Wettest since:
 2008
Jan–Sep 2009
9-Month 		37.61"
(955.29mm)		 33.30"
(845.82mm)		 4.31"
(109.47mm)		 100th Driest
Driest since:
 1957
29th Wettest
Wettest since:
 2008
Dec 2008–Sep 2009
10-Month 		44.68"
(1,134.87mm)		 37.13"
(943.10mm)		 7.55"
(191.77mm)		 118th Driest
Driest since:
 1957
10th Wettest
Wettest since:
 2008
Nov 2008–Sep 2009
11-Month 		48.49"
(1,231.65mm)		 41.15"
(1,045.21mm)		 7.34"
(186.44mm)		 110th Driest
Driest since:
 1965
18th Wettest
Wettest since:
 2008
Oct 2008–Sep 2009
12-Month 		51.33"
(1,303.78mm)		 44.66"
(1,134.36mm)		 6.67"
(169.42mm)		 106th Driest
Driest since:
 1965
22nd Wettest
Wettest since:
 2006
Apr 2008–Sep 2009
18-Month 		80.72"
(2,050.29mm)		 67.07"
(1,703.58mm)		 13.65"
(346.71mm)		 120th Driest
Driest since:
 1965
8th Wettest
Wettest since:
 2006
Oct 2007–Sep 2009
24-Month 		109.62"
(2,784.35mm)		 89.25"
(2,266.95mm)		 20.37"
(517.40mm)		 125th Driest
Driest since:
 1966
2nd Wettest
Wettest since:
 2007
Oct 2006–Sep 2009
36-Month 		156.42"
(3,973.07mm)		 133.88"
(3,400.55mm)		 22.54"
(572.52mm)		 118th Driest
Driest since:
 1966
8th Wettest
Wettest since:
 2008
Oct 2005–Sep 2009
48-Month 		219.51"
(5,575.55mm)		 178.50"
(4,533.90mm)		 41.01"
(1,041.65mm)		 124th Driest
Driest since:
 1966
1st Wettest
Wettest to Date
 2009
Oct 2004–Sep 2009
60-Month 		263.96"
(6,704.58mm)		 223.10"
(5,666.74mm)		 40.86"
(1,037.84mm)		 120th Driest
Driest since:
 1966
4th Wettest
Wettest to Date
 2010

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