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 1946

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 1946
1-Month
3.78"
(96.01mm)
3.79"
(96.27mm)
-0.01"
(-0.26mm)
76th Driest
Driest since:
1914
53rd Wettest
Wettest since:
1938
Ties: 1985
Aug–Sep 1946
2-Month
11.15"
(283.21mm)
7.69"
(195.33mm)
3.46"
(87.88mm)
116th Driest
Driest since:
1984
13th Wettest
Wettest since:
2011
Jul–Sep 1946
3-Month
14.42"
(366.27mm)
11.37"
(288.80mm)
3.05"
(77.47mm)
106th Driest
Driest since:
1968
23rd Wettest
Wettest since:
2021
Jun–Sep 1946
4-Month
18.18"
(461.77mm)
15.02"
(381.51mm)
3.16"
(80.26mm)
100th Driest
Driest since:
1957
29th Wettest
Wettest since:
1938
May–Sep 1946
5-Month
23.87"
(606.30mm)
18.61"
(472.69mm)
5.26"
(133.61mm)
115th Driest
Driest since:
1964
14th Wettest
Wettest since:
1938
Apr–Sep 1946
6-Month
26.48"
(672.59mm)
22.51"
(571.75mm)
3.97"
(100.84mm)
100th Driest
Driest since:
1964
29th Wettest
Wettest since:
1938
Mar–Sep 1946
7-Month
28.11"
(713.99mm)
26.45"
(671.83mm)
1.66"
(42.16mm)
78th Driest
Driest since:
1965
51st Wettest
Wettest since:
1938
Ties: 1906
Feb–Sep 1946
8-Month
31.30"
(795.02mm)
29.66"
(753.36mm)
1.64"
(41.66mm)
77th Driest
Driest since:
1957
52nd Wettest
Wettest since:
2008
Jan–Sep 1946
9-Month
34.56"
(877.82mm)
33.30"
(845.82mm)
1.26"
(32.00mm)
72nd Driest
Driest since:
1957
57th Wettest
Wettest since:
2008
Dec 1945–Sep 1946
10-Month
40.07"
(1,017.78mm)
37.13"
(943.10mm)
2.94"
(74.68mm)
85th Driest
Driest since:
1957
43rd Wettest
Wettest since:
2008
Nov 1945–Sep 1946
11-Month
46.34"
(1,177.04mm)
41.15"
(1,045.21mm)
5.19"
(131.83mm)
97th Driest
Driest since:
1965
31st Wettest
Wettest since:
2008
Ties: 1974
Oct 1945–Sep 1946
12-Month
49.20"
(1,249.68mm)
44.66"
(1,134.36mm)
4.54"
(115.32mm)
88th Driest
Driest since:
1965
40th Wettest
Wettest since:
2006
Apr 1945–Sep 1946
18-Month
75.70"
(1,922.78mm)
67.07"
(1,703.58mm)
8.63"
(219.20mm)
99th Driest
Driest since:
1965
29th Wettest
Wettest since:
2006
Oct 1944–Sep 1946
24-Month
96.74"
(2,457.20mm)
89.25"
(2,266.95mm)
7.49"
(190.25mm)
88th Driest
Driest since:
1966
39th Wettest
Wettest since:
2007
Oct 1943–Sep 1946
36-Month
137.21"
(3,485.13mm)
133.88"
(3,400.55mm)
3.33"
(84.58mm)
61st Driest
Driest since:
1966
65th Wettest
Wettest since:
2008
Ties: 2014
Oct 1942–Sep 1946
48-Month
179.90"
(4,569.46mm)
178.50"
(4,533.90mm)
1.40"
(35.56mm)
59th Driest
Driest since:
1966
66th Wettest
Wettest since:
2009
Oct 1941–Sep 1946
60-Month
221.86"
(5,635.24mm)
223.10"
(5,666.74mm)
-1.24"
(-31.50mm)
49th Driest
Driest since:
1966
75th Wettest
Wettest since:
2010

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