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


Illinois

Precipitation Rankings, May 1999

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1999
1-Month
3.68"
(93.47mm)
4.08"
(103.63mm)
-0.40"
(-10.16mm)
53rd Driest Driest since: 1994 1934
73rd Wettest Wettest since: 1998 1995
Apr–May 1999
2-Month
9.21"
(233.93mm)
7.80"
(198.12mm)
1.41"
(35.81mm)
93rd Driest Driest since: 1997 1934
33rd Wettest Wettest since: 1998 1927
Mar–May 1999
3-Month
10.93"
(277.62mm)
10.89"
(276.61mm)
0.04"
(1.01mm)
68th Driest Driest since: 1997 1934
58th Wettest Wettest since: 1998 1927
Feb–May 1999
4-Month
13.35"
(339.09mm)
12.75"
(323.85mm)
0.60"
(15.24mm)
80th Driest Driest since: 1997 1934
46th Wettest Wettest since: 1998 2019
Jan–May 1999
5-Month
17.56"
(446.02mm)
14.87"
(377.70mm)
2.69"
(68.32mm)
96th Driest Driest since: 1997 1934
30th Wettest Wettest since: 1998 2019
Ties: 1979
Dec 1998–May 1999
6-Month
19.12"
(485.65mm)
17.20"
(436.88mm)
1.92"
(48.77mm)
87th Driest Driest since: 1997 1934
38th Wettest Wettest since: 1998 2019
Nov 1998–May 1999
7-Month
21.57"
(547.88mm)
19.95"
(506.73mm)
1.62"
(41.15mm)
83rd Driest Driest since: 1997 1934
42nd Wettest Wettest since: 1998 2019
Oct 1998–May 1999
8-Month
25.80"
(655.32mm)
22.74"
(577.60mm)
3.06"
(77.72mm)
93rd Driest Driest since: 1997 1934
32nd Wettest Wettest since: 1998 2019
Sep 1998–May 1999
9-Month
28.08"
(713.23mm)
26.24"
(666.50mm)
1.84"
(46.73mm)
81st Driest Driest since: 1997 1934
44th Wettest Wettest since: 1998 1927
Aug 1998–May 1999
10-Month
31.38"
(797.05mm)
29.74"
(755.40mm)
1.64"
(41.65mm)
75th Driest Driest since: 1997 1934
50th Wettest Wettest since: 1998 1927
Jul 1998–May 1999
11-Month
34.85"
(885.19mm)
33.37"
(847.60mm)
1.48"
(37.59mm)
72nd Driest Driest since: 1997 1934
53rd Wettest Wettest since: 1998 1927
Jun 1998–May 1999
12-Month
42.49"
(1,079.25mm)
37.43"
(950.72mm)
5.06"
(128.53mm)
97th Driest Driest since: 1998 1934
28th Wettest Wettest since: 1994 1927
Dec 1997–May 1999
18-Month
63.96"
(1,624.58mm)
54.62"
(1,387.35mm)
9.34"
(237.23mm)
110th Driest Driest since: 1998 1902
14th Wettest Wettest since: 1994 2009
Jun 1997–May 1999
24-Month
81.47"
(2,069.34mm)
74.85"
(1,901.19mm)
6.62"
(168.15mm)
96th Driest Driest since: 1998 1941
28th Wettest Wettest since: 1995 1974
Jun 1996–May 1999
36-Month
117.99"
(2,996.95mm)
112.24"
(2,850.90mm)
5.75"
(146.05mm)
88th Driest Driest since: 1998 1902
35th Wettest Wettest since: 1996 2011
Jun 1995–May 1999
48-Month
154.89"
(3,934.21mm)
149.63"
(3,800.60mm)
5.26"
(133.61mm)
77th Driest Driest since: 1998 1956
45th Wettest Wettest since: 1997 2011
Jun 1994–May 1999
60-Month
197.22"
(5,009.39mm)
187.07"
(4,751.58mm)
10.15"
(257.81mm)
87th Driest Driest since: 1993 1934
34th Wettest Wettest since: 1998 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 16, 2019 from https://www.ncdc.noaa.gov/cag/