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 1899

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1899
1-Month 		5.33"
(135.38mm)		 3.79"
(96.27mm)		 1.54"
(39.11mm)		 101st Driest
Driest since:
 1914
28th Wettest
Wettest since:
 1938
Aug–Sep 1899
2-Month 		7.38"
(187.45mm)		 7.69"
(195.33mm)		 -0.31"
(-7.88mm)		 72nd Driest
Driest since:
 1984
57th Wettest
Wettest since:
 2011
Jul–Sep 1899
3-Month 		11.75"
(298.45mm)		 11.37"
(288.80mm)		 0.38"
(9.65mm)		 76th Driest
Driest since:
 1968
53rd Wettest
Wettest since:
 2021
Ties: 1904
Jun–Sep 1899
4-Month 		15.71"
(399.03mm)		 15.02"
(381.51mm)		 0.69"
(17.52mm)		 71st Driest
Driest since:
 1957
58th Wettest
Wettest since:
 1938
May–Sep 1899
5-Month 		17.23"
(437.64mm)		 18.61"
(472.69mm)		 -1.38"
(-35.05mm)		 45th Driest
Driest since:
 1964
84th Wettest
Wettest since:
 1938
Apr–Sep 1899
6-Month 		19.07"
(484.38mm)		 22.51"
(571.75mm)		 -3.44"
(-87.37mm)		 27th Driest
Driest to Date
 1964
102nd Wettest
Wettest since:
 1938
Mar–Sep 1899
7-Month 		26.12"
(663.45mm)		 26.45"
(671.83mm)		 -0.33"
(-8.38mm)		 57th Driest
Driest since:
 1965
72nd Wettest
Wettest since:
 1938
Feb–Sep 1899
8-Month 		30.43"
(772.92mm)		 29.66"
(753.36mm)		 0.77"
(19.56mm)		 68th Driest
Driest since:
 1957
61st Wettest
Wettest since:
 2008
Jan–Sep 1899
9-Month 		34.28"
(870.71mm)		 33.30"
(845.82mm)		 0.98"
(24.89mm)		 71st Driest
Driest since:
 1957
58th Wettest
Wettest since:
 2008
Dec 1898–Sep 1899
10-Month 		36.91"
(937.51mm)		 37.13"
(943.10mm)		 -0.22"
(-5.59mm)		 56th Driest
Driest since:
 1957
72nd Wettest
Wettest since:
 2008
Ties: 1924
Nov 1898–Sep 1899
11-Month 		43.35"
(1,101.09mm)		 41.15"
(1,045.21mm)		 2.20"
(55.88mm)		 78th Driest
Driest since:
 1965
50th Wettest
Wettest since:
 2008
Oct 1898–Sep 1899
12-Month 		50.41"
(1,280.41mm)		 44.66"
(1,134.36mm)		 5.75"
(146.05mm)		 100th Driest
Driest since:
 1965
28th Wettest
Wettest since:
 2006
Apr 1898–Sep 1899
18-Month 		76.46"
(1,942.08mm)		 67.07"
(1,703.58mm)		 9.39"
(238.50mm)		 104th Driest
Driest since:
 1965
24th Wettest
Wettest since:
 2006
Oct 1897–Sep 1899
24-Month 		101.25"
(2,571.75mm)		 89.25"
(2,266.95mm)		 12.00"
(304.80mm)		 109th Driest
Driest since:
 1966
18th Wettest
Wettest to Date
 2007
Oct 1896–Sep 1899
36-Month 		146.72"
(3,726.69mm)		 133.88"
(3,400.55mm)		 12.84"
(326.14mm)		 98th Driest
Driest since:
 1966
28th Wettest
Wettest to Date
 2008
Oct 1895–Sep 1899
48-Month 		195.27"
(4,959.86mm)		 178.50"
(4,533.90mm)		 16.77"
(425.96mm)		 101st Driest
Driest to Date
 1966
24th Wettest
Wettest to Date
 2009

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