Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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 1947

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1947
1-Month
22.5°F
(-5.3°C)
23.0°F
(-5.0°C)
-0.5°F
(-0.3°C)
51st Coolest
Coolest since:
1909
78th Warmest
Warmest since:
1980
Nov–Dec 1947
2-Month
25.0°F
(-3.9°C)
27.5°F
(-2.5°C)
-2.5°F
(-1.4°C)
24th Coolest
Coolest since:
1895
105th Warmest
Warmest since:
2017
Oct–Dec 1947
3-Month
32.8°F
(0.4°C)
33.5°F
(0.8°C)
-0.7°F
(-0.4°C)
45th Coolest
Coolest since:
1898
84th Warmest
Warmest since:
1950, 2017
Ties: 1979
Sep–Dec 1947
4-Month
39.3°F
(4.1°C)
39.2°F
(4.0°C)
0.1°F
(0.1°C)
59th Coolest
Coolest since:
1898, 1912
70th Warmest
Warmest since:
2021
Ties: 1926, 1935, 1990, 1991
Aug–Dec 1947
5-Month
44.4°F
(6.9°C)
44.3°F
(6.8°C)
0.1°F
(0.1°C)
58th Coolest
Coolest since:
1912
71st Warmest
Warmest since:
2021
Ties: 1926, 1986
Jul–Dec 1947
6-Month
48.2°F
(9.0°C)
48.1°F
(8.9°C)
0.1°F
(0.1°C)
58th Coolest
Coolest since:
1912
71st Warmest
Warmest since:
2021
Jun–Dec 1947
7-Month
49.4°F
(9.7°C)
49.9°F
(9.9°C)
-0.5°F
(-0.2°C)
46th Coolest
Coolest since:
1912
83rd Warmest
Warmest since:
2021
May–Dec 1947
8-Month
50.0°F
(10.0°C)
50.0°F
(10.0°C)
0.0°F
(0.0°C)
52nd Coolest
Coolest since:
1912
77th Warmest
Warmest since:
2021
Ties: 1935, 1973, 1992
Apr–Dec 1947
9-Month
49.0°F
(9.4°C)
49.1°F
(9.5°C)
-0.1°F
(-0.1°C)
54th Coolest
Coolest since:
1912
75th Warmest
Warmest since:
2021
Ties: 1900, 1935
Mar–Dec 1947
10-Month
47.6°F
(8.7°C)
47.5°F
(8.6°C)
0.1°F
(0.1°C)
63rd Coolest
Coolest since:
1912
66th Warmest
Warmest since:
2012
Ties: 1972
Feb–Dec 1947
11-Month
45.9°F
(7.7°C)
45.5°F
(7.5°C)
0.4°F
(0.2°C)
77th Coolest
Coolest since:
1912
52nd Warmest
Warmest since:
2017
Ties: 1900, 1937, 1950, 1960, 1972, 1991, 1997
Jan–Dec 1947
12-Month
43.7°F
(6.5°C)
43.4°F
(6.3°C)
0.3°F
(0.2°C)
63rd Coolest
Coolest since:
1895, 1912
66th Warmest
Warmest since:
2012
Ties: 1938, 1950, 1956, 1960, 2008
Jul 1946–Dec 1947
18-Month
45.3°F
(7.4°C)
45.0°F
(7.2°C)
0.3°F
(0.2°C)
72nd Coolest
Coolest since:
1912
56th Warmest
Warmest since:
1934
Ties: 1921, 1939, 1960, 1961
Jan 1946–Dec 1947
24-Month
44.0°F
(6.7°C)
43.4°F
(6.3°C)
0.6°F
(0.4°C)
78th Coolest
Coolest since:
1913
50th Warmest
Warmest since:
2018
Ties: 1955, 1958, 1960
Jan 1945–Dec 1947
36-Month
43.7°F
(6.5°C)
43.4°F
(6.3°C)
0.3°F
(0.2°C)
72nd Coolest
Coolest since:
1899, 1913
55th Warmest
Warmest since:
2017
Ties: 1902, 1937, 1938, 1943, 1962, 1980, 1993
Jan 1944–Dec 1947
48-Month
43.4°F
(6.3°C)
43.4°F
(6.3°C)
0.0°F
(0.0°C)
53rd Coolest
Coolest since:
1898
73rd Warmest
Warmest since:
2018
Ties: 1928, 1944, 1948, 1965
Jan 1943–Dec 1947
60-Month
43.7°F
(6.5°C)
43.4°F
(6.3°C)
0.3°F
(0.2°C)
68th Coolest
Coolest since:
1899
57th Warmest
Warmest since:
2018
Ties: 1944, 1954, 1956, 1959, 1985

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