Climate at a Glance

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


Contiguous U.S.

Precipitation Rankings, May 1999

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1999
1-Month
2.91"
(73.91mm)
2.91"
(73.91mm)
0.00"
(0.00mm)
61st Driest Driest since: 1998 1934
65th Wettest Wettest since: 1996 2019
Apr–May 1999
2-Month
5.78"
(146.81mm)
5.43"
(137.92mm)
0.35"
(8.89mm)
84th Driest Driest since: 1998 1934
42nd Wettest Wettest since: 1996 1957
Mar–May 1999
3-Month
7.97"
(202.44mm)
7.94"
(201.68mm)
0.03"
(0.76mm)
67th Driest Driest since: 1994 1925
59th Wettest Wettest since: 1998 1957, 1991
Ties: 2013
Feb–May 1999
4-Month
9.89"
(251.21mm)
10.07"
(255.78mm)
-0.18"
(-4.57mm)
58th Driest Driest since: 1994 1925
68th Wettest Wettest since: 1998 2019
Jan–May 1999
5-Month
13.02"
(330.71mm)
12.39"
(314.71mm)
0.63"
(16.00mm)
89th Driest Driest since: 1996 1934
37th Wettest Wettest since: 1998 2019
Dec 1998–May 1999
6-Month
15.10"
(383.54mm)
14.73"
(374.14mm)
0.37"
(9.40mm)
72nd Driest Driest since: 1996 1931
53rd Wettest Wettest since: 1998 2019
Nov 1998–May 1999
7-Month
17.73"
(450.34mm)
16.96"
(430.78mm)
0.77"
(19.56mm)
88th Driest Driest since: 1996 1934
37th Wettest Wettest since: 1998 1983
Oct 1998–May 1999
8-Month
20.70"
(525.78mm)
19.13"
(485.90mm)
1.57"
(39.88mm)
99th Driest Driest since: 1996 1934
26th Wettest Wettest since: 1998 2019
Sep 1998–May 1999
9-Month
23.21"
(589.53mm)
21.62"
(549.15mm)
1.59"
(40.38mm)
102nd Driest Driest since: 1996 1934
23rd Wettest Wettest since: 1998 2019
Ties: 1919, 1987
Aug 1998–May 1999
10-Month
25.63"
(651.00mm)
24.25"
(615.95mm)
1.38"
(35.05mm)
95th Driest Driest since: 1996 1918
30th Wettest Wettest since: 1998 2019
Jul 1998–May 1999
11-Month
28.49"
(723.65mm)
27.03"
(686.56mm)
1.46"
(37.09mm)
93rd Driest Driest since: 1996 1931
32nd Wettest Wettest since: 1998 2019
Jun 1998–May 1999
12-Month
31.81"
(807.97mm)
29.95"
(760.73mm)
1.86"
(47.24mm)
96th Driest Driest since: 1996 1934
29th Wettest Wettest since: 1998 2019
Ties: 1987
Dec 1997–May 1999
18-Month
49.22"
(1,250.19mm)
44.70"
(1,135.38mm)
4.52"
(114.81mm)
114th Driest Driest since: 1996 1931
10th Wettest Wettest since: 1998 2019
Jun 1997–May 1999
24-Month
65.36"
(1,660.14mm)
59.92"
(1,521.97mm)
5.44"
(138.17mm)
115th Driest Driest since: 1997 1931
9th Wettest Wettest since: 1998 1974
Jun 1996–May 1999
36-Month
99.64"
(2,530.86mm)
89.88"
(2,282.95mm)
9.76"
(247.91mm)
118th Driest Driest since: 1998 1955
5th Wettest Wettest since: 1984 2019
Jun 1995–May 1999
48-Month
130.46"
(3,313.68mm)
119.78"
(3,042.41mm)
10.68"
(271.27mm)
117th Driest Driest since: 1997 1956
5th Wettest Wettest since: 1998 2019
Jun 1994–May 1999
60-Month
163.78"
(4,160.01mm)
149.64"
(3,800.86mm)
14.14"
(359.15mm)
119th Driest Driest since: 1998 1957
2nd Wettest Wettest to Date 2019

Citing This Page

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