Regional Rankings

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

Upper Colorado River Basin

Average Temperature Rankings, December 1930

View Period (Months):
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  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1930
1-Month
17.5°F
(-8.1°C)
23.0°F
(-5.0°C)
-5.5°F
(-3.1°C)
13th Coolest
Coolest since:
1909
116th Warmest
Warmest since:
1980
Ties: 1928, 1967
Nov–Dec 1930
2-Month
22.8°F
(-5.1°C)
27.4°F
(-2.6°C)
-4.6°F
(-2.5°C)
5th Coolest
Coolest since:
1895
124th Warmest
Warmest since:
2017
Ties: 1911
Oct–Dec 1930
3-Month
29.7°F
(-1.3°C)
33.4°F
(0.8°C)
-3.7°F
(-2.1°C)
6th Coolest
Coolest since:
1898
123rd Warmest
Warmest since:
1950, 2017
Sep–Dec 1930
4-Month
36.2°F
(2.3°C)
39.3°F
(4.1°C)
-3.1°F
(-1.8°C)
8th Coolest
Coolest since:
1898, 1912
121st Warmest
Warmest since:
2021
Ties: 1916, 1919
Aug–Dec 1930
5-Month
41.9°F
(5.5°C)
44.4°F
(6.9°C)
-2.5°F
(-1.4°C)
7th Coolest
Coolest since:
1912
122nd Warmest
Warmest since:
2021
Jul–Dec 1930
6-Month
46.1°F
(7.8°C)
48.1°F
(8.9°C)
-2.0°F
(-1.1°C)
7th Coolest
Coolest since:
1912
122nd Warmest
Warmest since:
2021
Jun–Dec 1930
7-Month
48.2°F
(9.0°C)
49.9°F
(9.9°C)
-1.7°F
(-0.9°C)
8th Coolest
Coolest since:
1912
121st Warmest
Warmest since:
2021
May–Dec 1930
8-Month
48.2°F
(9.0°C)
50.0°F
(10.0°C)
-1.8°F
(-1.0°C)
7th Coolest
Coolest since:
1912
122nd Warmest
Warmest since:
2021
Ties: 1905
Apr–Dec 1930
9-Month
48.0°F
(8.9°C)
49.1°F
(9.5°C)
-1.1°F
(-0.6°C)
22nd Coolest
Coolest since:
1912
107th Warmest
Warmest since:
2021
Ties: 1993
Mar–Dec 1930
10-Month
46.4°F
(8.0°C)
47.4°F
(8.6°C)
-1.0°F
(-0.6°C)
21st Coolest
Coolest since:
1912
108th Warmest
Warmest since:
2012
Ties: 1897, 1902, 1905, 1929, 1964, 1970
Feb–Dec 1930
11-Month
44.8°F
(7.1°C)
45.4°F
(7.4°C)
-0.6°F
(-0.3°C)
36th Coolest
Coolest since:
1912
93rd Warmest
Warmest since:
2017
Ties: 1902, 1906, 1922, 1928, 1982
Jan–Dec 1930
12-Month
42.2°F
(5.7°C)
43.5°F
(6.4°C)
-1.3°F
(-0.7°C)
20th Coolest
Coolest since:
1895, 1912
109th Warmest
Warmest since:
2012
Ties: 1897, 1919, 1984
Jul 1929–Dec 1930
18-Month
44.1°F
(6.7°C)
45.0°F
(7.2°C)
-0.9°F
(-0.5°C)
23rd Coolest
Coolest since:
1912
105th Warmest
Warmest since:
1934
Ties: 1905
Jan 1929–Dec 1930
24-Month
41.9°F
(5.5°C)
43.4°F
(6.3°C)
-1.5°F
(-0.8°C)
8th Coolest
Coolest since:
1913
120th Warmest
Warmest since:
2018
Ties: 1903, 1924
Jan 1928–Dec 1930
36-Month
42.3°F
(5.7°C)
43.4°F
(6.3°C)
-1.1°F
(-0.6°C)
11th Coolest
Coolest since:
1899, 1913
116th Warmest
Warmest since:
2017
Ties: 1916, 1920, 1975
Jan 1927–Dec 1930
48-Month
42.5°F
(5.8°C)
43.4°F
(6.3°C)
-0.9°F
(-0.5°C)
16th Coolest
Coolest since:
1898
110th Warmest
Warmest since:
2018
Ties: 1909, 1912
Jan 1926–Dec 1930
60-Month
42.8°F
(6.0°C)
43.4°F
(6.3°C)
-0.6°F
(-0.3°C)
25th Coolest
Coolest since:
1899
100th Warmest
Warmest since:
2018
Ties: 1902, 1903, 1922, 1925, 1952, 1968, 1975

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