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


Illinois

Precipitation Rankings, December 2017

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
December 2017
1-Month
0.84"
(21.34mm)
2.33"
(59.18mm)
-1.49"
(-37.84mm)
7th Driest Driest since: 1976 1976
119th Wettest Wettest since: 2016 1982
Nov–Dec 2017
2-Month
3.10"
(78.74mm)
5.09"
(129.29mm)
-1.99"
(-50.55mm)
18th Driest Driest since: 1989 1976
108th Wettest Wettest since: 2016 2015
Oct–Dec 2017
3-Month
8.10"
(205.74mm)
7.88"
(200.15mm)
0.22"
(5.59mm)
65th Driest Driest since: 2016 1904
61st Wettest Wettest since: 2015 1985
Sep–Dec 2017
4-Month
8.93"
(226.82mm)
11.37"
(288.80mm)
-2.44"
(-61.98mm)
32nd Driest Driest since: 2002 1939
94th Wettest Wettest since: 2016 1926
Aug–Dec 2017
5-Month
11.33"
(287.78mm)
14.87"
(377.70mm)
-3.54"
(-89.92mm)
19th Driest Driest since: 1999 1953
107th Wettest Wettest since: 2016 1926
Jul–Dec 2017
6-Month
16.14"
(409.96mm)
18.51"
(470.15mm)
-2.37"
(-60.19mm)
36th Driest Driest since: 2013 1953
90th Wettest Wettest since: 2016 1993
Jun–Dec 2017
7-Month
19.33"
(490.98mm)
22.59"
(573.79mm)
-3.26"
(-82.81mm)
31st Driest Driest since: 2012 1953
95th Wettest Wettest since: 2016 2015
May–Dec 2017
8-Month
24.50"
(622.30mm)
26.68"
(677.67mm)
-2.18"
(-55.37mm)
40th Driest Driest since: 2012 1953
86th Wettest Wettest since: 2016 2015
Apr–Dec 2017
9-Month
31.38"
(797.05mm)
30.39"
(771.91mm)
0.99"
(25.14mm)
66th Driest Driest since: 2012 1901
60th Wettest Wettest since: 2016 2015
Ties: 1958
Mar–Dec 2017
10-Month
34.94"
(887.48mm)
33.48"
(850.39mm)
1.46"
(37.09mm)
75th Driest Driest since: 2012 1930
51st Wettest Wettest since: 2016 2009
Feb–Dec 2017
11-Month
35.67"
(906.02mm)
35.34"
(897.64mm)
0.33"
(8.38mm)
66th Driest Driest since: 2012 1930
60th Wettest Wettest since: 2016 2009
Jan–Dec 2017
12-Month
37.80"
(960.12mm)
37.47"
(951.74mm)
0.33"
(8.38mm)
67th Driest Driest since: 2012 1901
59th Wettest Wettest since: 2016 1993
Jul 2016–Dec 2017
18-Month
61.26"
(1,556.00mm)
55.97"
(1,421.64mm)
5.29"
(134.36mm)
99th Driest Driest since: 2014 1953
26th Wettest Wettest since: 2016 1927
Jan 2016–Dec 2017
24-Month
77.55"
(1,969.77mm)
74.89"
(1,902.21mm)
2.66"
(67.56mm)
81st Driest Driest since: 2013 1964
44th Wettest Wettest since: 2016 2009
Jan 2015–Dec 2017
36-Month
126.35"
(3,209.29mm)
112.28"
(2,851.91mm)
14.07"
(357.38mm)
109th Driest Driest since: 2014 1964
15th Wettest Wettest since: 2016 2010
Jan 2014–Dec 2017
48-Month
167.64"
(4,258.06mm)
149.70"
(3,802.38mm)
17.94"
(455.68mm)
110th Driest Driest since: 2015 1956
13th Wettest Wettest since: 2016 2011
Jan 2013–Dec 2017
60-Month
210.13"
(5,337.30mm)
187.12"
(4,752.85mm)
23.01"
(584.45mm)
113th Driest Driest since: 2016 1956
9th Wettest Wettest since: 2013 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published February 2020, retrieved on February 17, 2020 from https://www.ncdc.noaa.gov/cag/