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 June 2020. For more information, please see Climatological Rankings.


Montana

Precipitation Rankings, September 1921

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
September 1921
1-Month
1.36"
(34.54mm)
1.46"
(37.08mm)
-0.10"
(-2.54mm)
64th Driest Driest since: 1920 2012
62nd Wettest Wettest since: 1918 1986
Aug–Sep 1921
2-Month
1.88"
(47.75mm)
2.77"
(70.36mm)
-0.89"
(-22.61mm)
25th Driest Driest since: 1919 2012
101st Wettest Wettest since: 1920 1985
Ties: 1943
Jul–Sep 1921
3-Month
3.54"
(89.92mm)
4.35"
(110.49mm)
-0.81"
(-20.57mm)
41st Driest Driest since: 1919 2012
85th Wettest Wettest since: 1920 1993
Jun–Sep 1921
4-Month
6.51"
(165.35mm)
7.22"
(183.39mm)
-0.71"
(-18.04mm)
45th Driest Driest since: 1920 1919
81st Wettest Wettest since: 1918 1993
May–Sep 1921
5-Month
8.86"
(225.04mm)
9.63"
(244.60mm)
-0.77"
(-19.56mm)
46th Driest Driest since: 1920 1919
80th Wettest Wettest since: 1916 1993
Apr–Sep 1921
6-Month
10.30"
(261.62mm)
11.14"
(282.96mm)
-0.84"
(-21.34mm)
40th Driest Driest since: 1919 1919
86th Wettest Wettest since: 1920 1993
Mar–Sep 1921
7-Month
12.10"
(307.34mm)
12.42"
(315.47mm)
-0.32"
(-8.13mm)
51st Driest Driest since: 1919 1919
75th Wettest Wettest since: 1920 1993
Ties: 1900
Feb–Sep 1921
8-Month
12.70"
(322.58mm)
13.48"
(342.39mm)
-0.78"
(-19.81mm)
43rd Driest Driest since: 1919 1919
83rd Wettest Wettest since: 1920 1993
Ties: 1961
Jan–Sep 1921
9-Month
13.71"
(348.23mm)
14.83"
(376.68mm)
-1.12"
(-28.45mm)
40th Driest Driest since: 1919 1919
86th Wettest Wettest since: 1920 1993
Dec 1920–Sep 1921
10-Month
14.54"
(369.32mm)
16.12"
(409.45mm)
-1.58"
(-40.13mm)
32nd Driest Driest since: 1919 1919
93rd Wettest Wettest since: 1920 1978
Nov 1920–Sep 1921
11-Month
15.15"
(384.81mm)
17.41"
(442.21mm)
-2.26"
(-57.40mm)
24th Driest Driest since: 1919 1919
101st Wettest Wettest since: 1920 1978
Oct 1920–Sep 1921
12-Month
16.49"
(418.85mm)
18.65"
(473.71mm)
-2.16"
(-54.86mm)
26th Driest Driest since: 1919 1919
99th Wettest Wettest since: 1920 1978
Apr 1920–Sep 1921
18-Month
27.36"
(694.94mm)
29.81"
(757.17mm)
-2.45"
(-62.23mm)
24th Driest Driest since: 1920 1919
101st Wettest Wettest since: 1918 2011
Oct 1919–Sep 1921
24-Month
36.03"
(915.16mm)
37.33"
(948.18mm)
-1.30"
(-33.02mm)
41st Driest Driest since: 1920 1937
83rd Wettest Wettest since: 1918 2011
Oct 1918–Sep 1921
36-Month
47.67"
(1,210.82mm)
56.02"
(1,422.91mm)
-8.35"
(-212.09mm)
4th Driest Driest to Date 1937
119th Wettest Wettest since: 1920 1909
Oct 1917–Sep 1921
48-Month
66.86"
(1,698.24mm)
74.76"
(1,898.90mm)
-7.90"
(-200.66mm)
10th Driest Driest to Date 1937
112th Wettest Wettest since: 1920 1909
Oct 1916–Sep 1921
60-Month
83.88"
(2,130.55mm)
93.48"
(2,374.39mm)
-9.60"
(-243.84mm)
10th Driest Driest to Date 1937
111th Wettest Wettest since: 1920 1978

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published July 2020, retrieved on August 4, 2020 from https://www.ncdc.noaa.gov/cag/