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 September 2019. For more information, please see Climatological Rankings.


Montana

Precipitation Rankings, May 1921

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1921
1-Month
2.35"
(59.69mm)
2.42"
(61.47mm)
-0.07"
(-1.78mm)
64th Driest Driest since: 1920 1937
62nd Wettest Wettest since: 1917 1927
Apr–May 1921
2-Month
3.79"
(96.27mm)
3.93"
(99.82mm)
-0.14"
(-3.55mm)
58th Driest Driest since: 1919 1934
68th Wettest Wettest since: 1920 2011
Mar–May 1921
3-Month
5.59"
(141.99mm)
5.20"
(132.08mm)
0.39"
(9.91mm)
79th Driest Driest since: 1919 1931
47th Wettest Wettest since: 1920 2011
Feb–May 1921
4-Month
6.19"
(157.23mm)
6.26"
(159.00mm)
-0.07"
(-1.77mm)
62nd Driest Driest since: 1919 1931
64th Wettest Wettest since: 1920 2011
Jan–May 1921
5-Month
7.20"
(182.88mm)
7.61"
(193.29mm)
-0.41"
(-10.41mm)
49th Driest Driest since: 1919 1931
77th Wettest Wettest since: 1920 2011
Dec 1920–May 1921
6-Month
8.03"
(203.96mm)
8.90"
(226.06mm)
-0.87"
(-22.10mm)
36th Driest Driest since: 1919 1931
89th Wettest Wettest since: 1920 2011
Ties: 1913
Nov 1920–May 1921
7-Month
8.64"
(219.46mm)
10.19"
(258.83mm)
-1.55"
(-39.37mm)
25th Driest Driest since: 1919 1931
100th Wettest Wettest since: 1920 2011
Oct 1920–May 1921
8-Month
9.98"
(253.49mm)
11.44"
(290.58mm)
-1.46"
(-37.09mm)
23rd Driest Driest since: 1919 1931
102nd Wettest Wettest since: 1920 2011
Ties: 1983
Sep 1920–May 1921
9-Month
10.94"
(277.88mm)
12.90"
(327.66mm)
-1.96"
(-49.78mm)
19th Driest Driest since: 1919 1905
106th Wettest Wettest since: 1920 2011
Ties: 1929
Aug 1920–May 1921
10-Month
12.24"
(310.90mm)
14.22"
(361.19mm)
-1.98"
(-50.29mm)
15th Driest Driest since: 1919 1905
110th Wettest Wettest since: 1920 2011
Jul 1920–May 1921
11-Month
13.63"
(346.20mm)
15.80"
(401.32mm)
-2.17"
(-55.12mm)
17th Driest Driest since: 1905 1905
108th Wettest Wettest since: 1920 2011
Jun 1920–May 1921
12-Month
16.15"
(410.21mm)
18.65"
(473.71mm)
-2.50"
(-63.50mm)
12th Driest Driest since: 1919 1905
113th Wettest Wettest since: 1920 2011
Dec 1919–May 1921
18-Month
26.19"
(665.23mm)
27.58"
(700.53mm)
-1.39"
(-35.30mm)
34th Driest Driest since: 1920 1937
90th Wettest Wettest since: 1919 2011
Jun 1919–May 1921
24-Month
32.88"
(835.15mm)
37.34"
(948.44mm)
-4.46"
(-113.29mm)
15th Driest Driest since: 1920 1937
109th Wettest Wettest since: 1918 1917
Ties: 1935
Jun 1918–May 1921
36-Month
48.39"
(1,229.11mm)
56.01"
(1,422.65mm)
-7.62"
(-193.54mm)
6th Driest Driest to Date 1937
117th Wettest Wettest since: 1920 1917
Jun 1917–May 1921
48-Month
64.71"
(1,643.63mm)
74.74"
(1,898.40mm)
-10.03"
(-254.77mm)
4th Driest Driest to Date 1937
118th Wettest Wettest since: 1920 1899, 1910
Jun 1916–May 1921
60-Month
86.75"
(2,203.45mm)
93.47"
(2,374.14mm)
-6.72"
(-170.69mm)
16th Driest Driest to Date 1938
105th Wettest Wettest since: 1920 1910

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2019, retrieved on October 20, 2019 from https://www.ncdc.noaa.gov/cag/