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


Montana

Precipitation Rankings, May 1987

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
May 1987
1-Month
3.15"
(80.01mm)
2.42"
(61.47mm)
0.73"
(18.54mm)
100th Driest Driest since: 1986 1937
27th Wettest Wettest since: 1982 1927
Apr–May 1987
2-Month
3.80"
(96.52mm)
3.93"
(99.82mm)
-0.13"
(-3.30mm)
60th Driest Driest since: 1985 1934
67th Wettest Wettest since: 1986 2011
Mar–May 1987
3-Month
5.58"
(141.73mm)
5.20"
(132.08mm)
0.38"
(9.65mm)
79th Driest Driest since: 1986 1931
48th Wettest Wettest since: 1982 2011
Feb–May 1987
4-Month
6.23"
(158.24mm)
6.26"
(159.00mm)
-0.03"
(-0.76mm)
64th Driest Driest since: 1985 1931
63rd Wettest Wettest since: 1986 2011
Jan–May 1987
5-Month
6.79"
(172.47mm)
7.61"
(193.29mm)
-0.82"
(-20.82mm)
32nd Driest Driest since: 1985 1931
95th Wettest Wettest since: 1986 2011
Dec 1986–May 1987
6-Month
7.21"
(183.13mm)
8.90"
(226.06mm)
-1.69"
(-42.93mm)
18th Driest Driest since: 1985 1931
108th Wettest Wettest since: 1986 2011
Nov 1986–May 1987
7-Month
8.99"
(228.35mm)
10.19"
(258.83mm)
-1.20"
(-30.48mm)
32nd Driest Driest since: 1985 1931
94th Wettest Wettest since: 1986 2011
Oct 1986–May 1987
8-Month
9.82"
(249.43mm)
11.44"
(290.58mm)
-1.62"
(-41.15mm)
19th Driest Driest since: 1985 1931
107th Wettest Wettest since: 1986 2011
Ties: 1924, 1958
Sep 1986–May 1987
9-Month
13.76"
(349.50mm)
12.90"
(327.66mm)
0.86"
(21.84mm)
80th Driest Driest since: 1985 1905
46th Wettest Wettest since: 1986 2011
Aug 1986–May 1987
10-Month
14.96"
(379.98mm)
14.22"
(361.19mm)
0.74"
(18.79mm)
76th Driest Driest since: 1985 1905
50th Wettest Wettest since: 1986 2011
Jul 1986–May 1987
11-Month
16.66"
(423.16mm)
15.80"
(401.32mm)
0.86"
(21.84mm)
80th Driest Driest since: 1985 1905
46th Wettest Wettest since: 1986 2011
Jun 1986–May 1987
12-Month
18.96"
(481.58mm)
18.66"
(473.96mm)
0.30"
(7.62mm)
64th Driest Driest since: 1985 1905
62nd Wettest Wettest since: 1986 2011
Dec 1985–May 1987
18-Month
28.24"
(717.30mm)
27.58"
(700.53mm)
0.66"
(16.77mm)
66th Driest Driest since: 1986 1937
59th Wettest Wettest since: 1983 2011
Ties: 1952
Jun 1985–May 1987
24-Month
39.12"
(993.65mm)
37.34"
(948.44mm)
1.78"
(45.21mm)
83rd Driest Driest since: 1986 1937
42nd Wettest Wettest since: 1982 1917
Jun 1984–May 1987
36-Month
54.82"
(1,392.43mm)
56.01"
(1,422.65mm)
-1.19"
(-30.22mm)
42nd Driest Driest since: 1986 1937
82nd Wettest Wettest since: 1984 1917
Jun 1983–May 1987
48-Month
72.64"
(1,845.06mm)
74.74"
(1,898.40mm)
-2.10"
(-53.34mm)
39th Driest Driest since: 1986 1937
84th Wettest Wettest since: 1984 1899, 1910
Jun 1982–May 1987
60-Month
90.49"
(2,298.45mm)
93.47"
(2,374.14mm)
-2.98"
(-75.69mm)
34th Driest Driest since: 1964 1938
88th Wettest Wettest since: 1986 1910

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2020, retrieved on August 12, 2020 from https://www.ncdc.noaa.gov/cag/