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 1928

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1928
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: 1930, 1967
Nov–Dec 1928
2-Month		24.6°F
(-4.1°C)		27.5°F
(-2.5°C)		-2.9°F
(-1.6°C)		20th Coolest
Coolest since:
1895
109th Warmest
Warmest since:
2017
Ties: 1918
Oct–Dec 1928
3-Month		31.7°F
(-0.2°C)		33.5°F
(0.8°C)		-1.8°F
(-1.0°C)		23rd Coolest
Coolest since:
1898
106th Warmest
Warmest since:
1950, 2017
Sep–Dec 1928
4-Month		38.0°F
(3.3°C)		39.2°F
(4.0°C)		-1.2°F
(-0.7°C)		26th Coolest
Coolest since:
1898, 1912
103rd Warmest
Warmest since:
2021
Ties: 1903, 1985, 1993
Aug–Dec 1928
5-Month		42.9°F
(6.1°C)		44.3°F
(6.8°C)		-1.4°F
(-0.7°C)		21st Coolest
Coolest since:
1912
108th Warmest
Warmest since:
2021
Ties: 1913, 1931
Jul–Dec 1928
6-Month		46.8°F
(8.2°C)		48.1°F
(8.9°C)		-1.3°F
(-0.7°C)		22nd Coolest
Coolest since:
1912
107th Warmest
Warmest since:
2021
Ties: 1897, 1918, 1951
Jun–Dec 1928
7-Month		48.3°F
(9.1°C)		49.9°F
(9.9°C)		-1.6°F
(-0.8°C)		9th Coolest
Coolest since:
1912
120th Warmest
Warmest since:
2021
Ties: 1899, 1905, 1924, 1932, 1951, 1993
May–Dec 1928
8-Month		49.0°F
(9.4°C)		50.0°F
(10.0°C)		-1.0°F
(-0.6°C)		24th Coolest
Coolest since:
1912
105th Warmest
Warmest since:
2021
Apr–Dec 1928
9-Month		47.9°F
(8.8°C)		49.1°F
(9.5°C)		-1.2°F
(-0.7°C)		15th Coolest
Coolest since:
1912
114th Warmest
Warmest since:
2021
Ties: 1907, 1923, 1932, 1945, 1951, 1971
Mar–Dec 1928
10-Month		46.7°F
(8.2°C)		47.5°F
(8.6°C)		-0.8°F
(-0.4°C)		31st Coolest
Coolest since:
1912
98th Warmest
Warmest since:
2012
Ties: 1896, 1915, 1948, 1957, 1973
Feb–Dec 1928
11-Month		44.8°F
(7.1°C)		45.5°F
(7.5°C)		-0.7°F
(-0.4°C)		36th Coolest
Coolest since:
1912
93rd Warmest
Warmest since:
2017
Ties: 1902, 1906, 1922, 1930, 1982
Jan–Dec 1928
12-Month		43.1°F
(6.2°C)		43.4°F
(6.3°C)		-0.3°F
(-0.1°C)		47th Coolest
Coolest since:
1895, 1912
82nd Warmest
Warmest since:
2012
Ties: 1945
Jul 1927–Dec 1928
18-Month		44.4°F
(6.9°C)		45.0°F
(7.2°C)		-0.6°F
(-0.3°C)		31st Coolest
Coolest since:
1912
97th Warmest
Warmest since:
1934
Ties: 1933, 1957, 1971, 1984, 1993
Jan 1927–Dec 1928
24-Month		43.1°F
(6.2°C)		43.4°F
(6.3°C)		-0.3°F
(-0.1°C)		42nd Coolest
Coolest since:
1913
86th Warmest
Warmest since:
2018
Ties: 1942, 1948, 1950, 1971, 1979
Jan 1926–Dec 1928
36-Month		43.4°F
(6.3°C)		43.4°F
(6.3°C)		0.0°F
(0.0°C)		54th Coolest
Coolest since:
1899, 1913
73rd Warmest
Warmest since:
2017
Ties: 1944, 1967, 1972
Jan 1925–Dec 1928
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 to Date
2018
Ties: 1944, 1947, 1948, 1965
Jan 1924–Dec 1928
60-Month		43.1°F
(6.2°C)		43.4°F
(6.3°C)		-0.3°F
(-0.1°C)		40th Coolest
Coolest since:
1899
85th Warmest
Warmest since:
2018
Ties: 1904, 1953, 1971, 1973

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