Regional Rankings

Regional Data Info
Please note, Degree Days are not available for Great Plains, Souther Plains and Gulf Coast, Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Northern Rockies and Plains

September 2012 Precipitation Rankings

View Period (Months):
  • Record Driest
  • Bottom ⅒
  • Bottom ⅓
  • Normal
  • Top ⅓
  • Top ⅒
  • Record Wettest
PeriodValue
1901-2000
Mean
AnomalyRank
(1895-2024)
Driest/Wettest
Since
Record
September 2012
1-Month
0.29in
(7.37mm)
1.58in
(40.13mm)
-1.29in1st DriestDriest to Date2012
130th Wettest
Wettest since:
1973
Aug–Sep 2012
2-Month
1.11in
(28.19mm)
3.32in
(84.33mm)
-2.21in1st DriestDriest to Date2012
130th Wettest
Wettest since:
2019
Jul–Sep 2012
3-Month
2.50in
(63.50mm)
5.39in
(136.91mm)
-2.89in1st DriestDriest to Date2012
130th Wettest
Wettest since:
1993
Jun–Sep 2012
4-Month
4.25in
(107.95mm)
8.35in
(212.09mm)
-4.10in1st DriestDriest to Date2012
130th Wettest
Wettest since:
1993
May–Sep 2012
5-Month
6.42in
(163.07mm)
10.97in
(278.64mm)
-4.55in2nd Driest
Driest since:
1936
129th Wettest
Wettest since:
1915
Apr–Sep 2012
6-Month
8.62in
(218.95mm)
12.71in
(322.83mm)
-4.09in3rd Driest
Driest since:
1936
128th Wettest
Wettest since:
1915
Mar–Sep 2012
7-Month
9.47in
(240.54mm)
13.86in
(352.04mm)
-4.39in3rd Driest
Driest since:
1936
128th Wettest
Wettest since:
1915
Feb–Sep 2012
8-Month
10.52in
(267.21mm)
14.66in
(372.36mm)
-4.14in3rd Driest
Driest since:
1934
128th Wettest
Wettest since:
1915
Jan–Sep 2012
9-Month
11.24in
(285.50mm)
15.54in
(394.72mm)
-4.30in3rd Driest
Driest since:
1934
128th Wettest
Wettest since:
1915
Dec 2011–Sep 2012
10-Month
11.86in
(301.24mm)
16.41in
(416.81mm)
-4.55in4th Driest
Driest since:
1931
126th Wettest
Wettest since:
2019
Nov 2011–Sep 2012
11-Month
12.63in
(320.80mm)
17.36in
(440.94mm)
-4.73in3rd Driest
Driest since:
1934
127th Wettest
Wettest since:
2019
Oct 2011–Sep 2012
12-Month
14.28in
(362.71mm)
18.61in
(472.69mm)
-4.33in4th Driest
Driest since:
1934, 1936
126th Wettest
Wettest since:
2019
Apr 2011–Sep 2012
18-Month
29.87in
(758.70mm)
31.33in
(795.78mm)
-1.46in39th Driest
Driest since:
1937
91st Wettest
Wettest since:
2011
Oct 2010–Sep 2012
24-Month
36.80in
(934.72mm)
37.24in
(945.90mm)
-0.44in51st Driest
Driest since:
1937
78th Wettest
Wettest since:
2011
Oct 2009–Sep 2012
36-Month
59.99in
(1,523.75mm)
55.83in4.16in106th Driest
Driest since:
1936
22nd Wettest
Wettest since:
2011
Oct 2008–Sep 2012
48-Month
80.24in
(2,038.10mm)
74.41in5.83in110th Driest
Driest since:
1937
17th Wettest
Wettest since:
2011
Oct 2007–Sep 2012
60-Month
100.01in
(2,540.25mm)
92.97in7.04in110th Driest
Driest since:
1937
16th Wettest
Wettest since:
1999

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