Divisional Rankings

Divisional Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 2. Northeast

Average Temperature Rankings, May 1999

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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 1999
1-Month
62.3°F
(16.8°C)
58.9°F
(14.9°C)
3.4°F
(1.9°C)
103rd Coolest
Coolest since:
1907
26th Warmest
Warmest since:
1977
Apr–May 1999
2-Month
56.4°F
(13.6°C)
53.3°F
(11.8°C)
3.1°F
(1.8°C)
112th Coolest
Coolest since:
1907
17th Warmest
Warmest since:
1896, 1977
Ties: 2006
Mar–May 1999
3-Month
49.4°F
(9.7°C)
47.6°F
(8.7°C)
1.8°F
(1.0°C)
103rd Coolest
Coolest since:
1926
26th Warmest
Warmest since:
2012
Ties: 2017
Feb–May 1999
4-Month
45.5°F
(7.5°C)
41.9°F
(5.5°C)
3.6°F
(2.0°C)
118th Coolest
Coolest since:
1904, 1947
11th Warmest
Warmest since:
2012
Jan–May 1999
5-Month
40.4°F
(4.7°C)
37.7°F
(3.2°C)
2.7°F
(1.5°C)
113th Coolest
Coolest since:
1912
16th Warmest
Warmest since:
2012
Ties: 2020
Dec 1998–May 1999
6-Month
39.3°F
(4.1°C)
35.8°F
(2.1°C)
3.5°F
(2.0°C)
120th Coolest
Coolest since:
1904
8th Warmest
Warmest since:
2012
Nov 1998–May 1999
7-Month
39.9°F
(4.4°C)
36.1°F
(2.3°C)
3.8°F
(2.1°C)
120th Coolest
Coolest since:
1904
8th Warmest
Warmest since:
2012
Ties: 1991
Oct 1998–May 1999
8-Month
41.7°F
(5.4°C)
38.1°F
(3.4°C)
3.6°F
(2.0°C)
120th Coolest
Coolest since:
1904
8th Warmest
Warmest since:
2012
Sep 1998–May 1999
9-Month
44.6°F
(7.0°C)
41.0°F
(5.0°C)
3.6°F
(2.0°C)
122nd Coolest
Coolest since:
1904
6th Warmest
Warmest since:
2012
Ties: 1998
Aug 1998–May 1999
10-Month
47.5°F
(8.6°C)
44.0°F
(6.7°C)
3.5°F
(1.9°C)
123rd Coolest
Coolest since:
1904
5th Warmest
Warmest since:
2012
Jul 1998–May 1999
11-Month
49.8°F
(9.9°C)
46.6°F
(8.1°C)
3.2°F
(1.8°C)
122nd Coolest
Coolest since:
1904
6th Warmest
Warmest since:
2012
Ties: 2006
Jun 1998–May 1999
12-Month
51.4°F
(10.8°C)
48.5°F
(9.2°C)
2.9°F
(1.6°C)
121st Coolest
Coolest since:
1904
7th Warmest
Warmest since:
2012
Ties: 2000
Dec 1997–May 1999
18-Month
48.1°F
(8.9°C)
44.2°F
(6.8°C)
3.9°F
(2.1°C)
125th Coolest
Coolest since:
1905, 1918
2nd Warmest
Warmest to Date
2017
Jun 1997–May 1999
24-Month
51.2°F
(10.7°C)
48.5°F
(9.2°C)
2.7°F
(1.5°C)
122nd Coolest
Coolest since:
1905
5th Warmest
Warmest to Date
2017
Jun 1996–May 1999
36-Month
49.9°F
(9.9°C)
48.5°F
(9.2°C)
1.4°F
(0.7°C)
107th Coolest
Coolest since:
1918
19th Warmest
Warmest since:
2000
Ties: 1989
Jun 1995–May 1999
48-Month
49.4°F
(9.7°C)
48.4°F
(9.1°C)
1.0°F
(0.6°C)
95th Coolest
Coolest since:
1907
30th Warmest
Warmest since:
2001
Ties: 1933, 2017
Jun 1994–May 1999
60-Month
49.4°F
(9.7°C)
48.4°F
(9.1°C)
1.0°F
(0.6°C)
98th Coolest
Coolest since:
1908
26th Warmest
Warmest since:
2002
Ties: 1934, 1990, 1993

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