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 1950

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1950
1-Month 		2.17"
(55.12mm)		 3.79"
(96.27mm)		 -1.62"
(-41.15mm)		 28th Driest
Driest since:
 1914
101st Wettest
Wettest since:
 1938
Aug–Sep 1950
2-Month 		6.39"
(162.31mm)		 7.69"
(195.33mm)		 -1.30"
(-33.02mm)		 46th Driest
Driest since:
 1984
83rd Wettest
Wettest since:
 2011
Jul–Sep 1950
3-Month 		8.83"
(224.28mm)		 11.37"
(288.80mm)		 -2.54"
(-64.52mm)		 24th Driest
Driest since:
 1968
105th Wettest
Wettest since:
 2021
Jun–Sep 1950
4-Month 		11.85"
(300.99mm)		 15.02"
(381.51mm)		 -3.17"
(-80.52mm)		 25th Driest
Driest since:
 1957
104th Wettest
Wettest since:
 1938
May–Sep 1950
5-Month 		14.67"
(372.62mm)		 18.61"
(472.69mm)		 -3.94"
(-100.07mm)		 19th Driest
Driest since:
 1964
110th Wettest
Wettest since:
 1938
Apr–Sep 1950
6-Month 		17.79"
(451.87mm)		 22.51"
(571.75mm)		 -4.72"
(-119.88mm)		 17th Driest
Driest since:
 1964
112th Wettest
Wettest since:
 1938
Mar–Sep 1950
7-Month 		21.10"
(535.94mm)		 26.45"
(671.83mm)		 -5.35"
(-135.89mm)		 15th Driest
Driest since:
 1965
114th Wettest
Wettest since:
 1938
Feb–Sep 1950
8-Month 		24.82"
(630.43mm)		 29.66"
(753.36mm)		 -4.84"
(-122.93mm)		 16th Driest
Driest since:
 1957
113th Wettest
Wettest since:
 2008
Jan–Sep 1950
9-Month 		29.09"
(738.89mm)		 33.30"
(845.82mm)		 -4.21"
(-106.93mm)		 23rd Driest
Driest since:
 1957
106th Wettest
Wettest since:
 2008
Dec 1949–Sep 1950
10-Month 		31.78"
(807.21mm)		 37.13"
(943.10mm)		 -5.35"
(-135.89mm)		 17th Driest
Driest since:
 1957
111th Wettest
Wettest since:
 2008
Nov 1949–Sep 1950
11-Month 		34.48"
(875.79mm)		 41.15"
(1,045.21mm)		 -6.67"
(-169.42mm)		 12th Driest
Driest since:
 1965
116th Wettest
Wettest since:
 2008
Ties: 1926
Oct 1949–Sep 1950
12-Month 		36.57"
(928.88mm)		 44.66"
(1,134.36mm)		 -8.09"
(-205.48mm)		 10th Driest
Driest since:
 1965
118th Wettest
Wettest since:
 2006
Apr 1949–Sep 1950
18-Month 		54.87"
(1,393.70mm)		 67.07"
(1,703.58mm)		 -12.20"
(-309.88mm)		 7th Driest
Driest since:
 1965
121st Wettest
Wettest since:
 2006
Oct 1948–Sep 1950
24-Month 		77.59"
(1,970.79mm)		 89.25"
(2,266.95mm)		 -11.66"
(-296.16mm)		 10th Driest
Driest since:
 1966
117th Wettest
Wettest since:
 2007
Oct 1947–Sep 1950
36-Month 		120.87"
(3,070.10mm)		 133.88"
(3,400.55mm)		 -13.01"
(-330.45mm)		 16th Driest
Driest since:
 1966
110th Wettest
Wettest since:
 2008
Oct 1946–Sep 1950
48-Month 		158.02"
(4,013.71mm)		 178.50"
(4,533.90mm)		 -20.48"
(-520.19mm)		 9th Driest
Driest since:
 1966
116th Wettest
Wettest since:
 2009
Oct 1945–Sep 1950
60-Month 		207.22"
(5,263.39mm)		 223.10"
(5,666.74mm)		 -15.88"
(-403.35mm)		 20th Driest
Driest since:
 1966
104th Wettest
Wettest since:
 2010

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