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 1939

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1939
1-Month
2.61"
(66.29mm)
3.79"
(96.27mm)
-1.18"
(-29.98mm)
42nd Driest
Driest since:
1914
87th Wettest
Wettest since:
1938
Aug–Sep 1939
2-Month
6.86"
(174.24mm)
7.69"
(195.33mm)
-0.83"
(-21.09mm)
56th Driest
Driest since:
1984
73rd Wettest
Wettest since:
2011
Ties: 1917
Jul–Sep 1939
3-Month
8.57"
(217.68mm)
11.37"
(288.80mm)
-2.80"
(-71.12mm)
22nd Driest
Driest since:
1968
107th Wettest
Wettest since:
2021
Jun–Sep 1939
4-Month
11.83"
(300.48mm)
15.02"
(381.51mm)
-3.19"
(-81.03mm)
24th Driest
Driest since:
1957
105th Wettest
Wettest since:
1938
May–Sep 1939
5-Month
13.38"
(339.85mm)
18.61"
(472.69mm)
-5.23"
(-132.84mm)
12th Driest
Driest since:
1964
117th Wettest
Wettest since:
1938
Apr–Sep 1939
6-Month
18.14"
(460.76mm)
22.51"
(571.75mm)
-4.37"
(-110.99mm)
18th Driest
Driest since:
1964
111th Wettest
Wettest since:
1938
Mar–Sep 1939
7-Month
22.79"
(578.87mm)
26.45"
(671.83mm)
-3.66"
(-92.96mm)
24th Driest
Driest since:
1965
105th Wettest
Wettest since:
1938
Feb–Sep 1939
8-Month
26.52"
(673.61mm)
29.66"
(753.36mm)
-3.14"
(-79.75mm)
29th Driest
Driest since:
1957
100th Wettest
Wettest since:
2008
Jan–Sep 1939
9-Month
29.25"
(742.95mm)
33.30"
(845.82mm)
-4.05"
(-102.87mm)
24th Driest
Driest since:
1957
105th Wettest
Wettest since:
2008
Dec 1938–Sep 1939
10-Month
32.69"
(830.33mm)
37.13"
(943.10mm)
-4.44"
(-112.77mm)
21st Driest
Driest since:
1957
107th Wettest
Wettest since:
2008
Nov 1938–Sep 1939
11-Month
35.95"
(913.13mm)
41.15"
(1,045.21mm)
-5.20"
(-132.08mm)
24th Driest
Driest since:
1965
104th Wettest
Wettest since:
2008
Ties: 1925
Oct 1938–Sep 1939
12-Month
38.52"
(978.41mm)
44.66"
(1,134.36mm)
-6.14"
(-155.95mm)
21st Driest
Driest since:
1965
107th Wettest
Wettest since:
2006
Apr 1938–Sep 1939
18-Month
74.91"
(1,902.71mm)
67.07"
(1,703.58mm)
7.84"
(199.13mm)
95th Driest
Driest since:
1965
33rd Wettest
Wettest since:
2006
Oct 1937–Sep 1939
24-Month
97.81"
(2,484.37mm)
89.25"
(2,266.95mm)
8.56"
(217.42mm)
93rd Driest
Driest since:
1966
34th Wettest
Wettest since:
2007
Oct 1936–Sep 1939
36-Month
146.28"
(3,715.51mm)
133.88"
(3,400.55mm)
12.40"
(314.96mm)
97th Driest
Driest since:
1966
29th Wettest
Wettest since:
2008
Oct 1935–Sep 1939
48-Month
191.89"
(4,874.01mm)
178.50"
(4,533.90mm)
13.39"
(340.11mm)
88th Driest
Driest since:
1966
37th Wettest
Wettest since:
2009
Oct 1934–Sep 1939
60-Month
233.09"
(5,920.49mm)
223.10"
(5,666.74mm)
9.99"
(253.75mm)
74th Driest
Driest since:
1966
50th Wettest
Wettest since:
2010

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