Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of February 2020. For more information, please see Climatological Rankings.


Montana

Precipitation Rankings, September 2012

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
September 2012
1-Month
0.17"
(4.32mm)
1.46"
(37.08mm)
-1.29"
(-32.76mm)
1st Driest Driest to Date 2012
125th Wettest Wettest since: 2011 1986
Aug–Sep 2012
2-Month
0.74"
(18.80mm)
2.77"
(70.36mm)
-2.03"
(-51.56mm)
1st Driest Driest to Date 2012
125th Wettest Wettest since: 2011 1985
Jul–Sep 2012
3-Month
2.03"
(51.56mm)
4.35"
(110.49mm)
-2.32"
(-58.93mm)
1st Driest Driest to Date 2012
125th Wettest Wettest since: 2011 1993
Jun–Sep 2012
4-Month
4.04"
(102.62mm)
7.22"
(183.39mm)
-3.18"
(-80.77mm)
3rd Driest Driest since: 1919 1919
123rd Wettest Wettest since: 2011 1993
May–Sep 2012
5-Month
6.46"
(164.08mm)
9.63"
(244.60mm)
-3.17"
(-80.52mm)
8th Driest Driest since: 1979 1919
118th Wettest Wettest since: 2011 1993
Apr–Sep 2012
6-Month
8.44"
(214.38mm)
11.14"
(282.96mm)
-2.70"
(-68.58mm)
14th Driest Driest since: 1988 1919
112th Wettest Wettest since: 2011 1993
Mar–Sep 2012
7-Month
10.04"
(255.02mm)
12.42"
(315.47mm)
-2.38"
(-60.45mm)
19th Driest Driest since: 2000 1919
107th Wettest Wettest since: 2011 1993
Feb–Sep 2012
8-Month
10.99"
(279.15mm)
13.48"
(342.39mm)
-2.49"
(-63.24mm)
12th Driest Driest since: 1994 1919
114th Wettest Wettest since: 2011 1993
Ties: 1929, 1966
Jan–Sep 2012
9-Month
12.22"
(310.39mm)
14.83"
(376.68mm)
-2.61"
(-66.29mm)
13th Driest Driest since: 2001 1919
113th Wettest Wettest since: 2011 1993
Dec 2011–Sep 2012
10-Month
13.03"
(330.96mm)
16.12"
(409.45mm)
-3.09"
(-78.49mm)
10th Driest Driest since: 2001 1919
115th Wettest Wettest since: 2011 1978
Nov 2011–Sep 2012
11-Month
14.11"
(358.39mm)
17.41"
(442.21mm)
-3.30"
(-83.82mm)
9th Driest Driest since: 2001 1919
116th Wettest Wettest since: 2011 1978
Oct 2011–Sep 2012
12-Month
16.10"
(408.94mm)
18.65"
(473.71mm)
-2.55"
(-64.77mm)
21st Driest Driest since: 2003 1919
104th Wettest Wettest since: 2011 1978
Apr 2011–Sep 2012
18-Month
30.31"
(769.87mm)
29.81"
(757.17mm)
0.50"
(12.70mm)
69th Driest Driest since: 2009 1919
56th Wettest Wettest since: 2011 2011
Ties: 1971
Oct 2010–Sep 2012
24-Month
39.51"
(1,003.55mm)
37.33"
(948.18mm)
2.18"
(55.37mm)
88th Driest Driest since: 2010 1937
36th Wettest Wettest since: 2011 2011
Oct 2009–Sep 2012
36-Month
60.84"
(1,545.34mm)
56.02"
(1,422.91mm)
4.82"
(122.43mm)
106th Driest Driest since: 2010 1937
17th Wettest Wettest since: 2011 1909
Oct 2008–Sep 2012
48-Month
79.01"
(2,006.85mm)
74.76"
(1,898.90mm)
4.25"
(107.95mm)
94th Driest Driest since: 2010 1937
28th Wettest Wettest since: 2011 1909
Oct 2007–Sep 2012
60-Month
97.71"
(2,481.83mm)
93.48"
(2,374.39mm)
4.23"
(107.44mm)
89th Driest Driest since: 2010 1937
32nd Wettest Wettest since: 2011 1978

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published March 2020, retrieved on April 2, 2020 from https://www.ncdc.noaa.gov/cag/