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 1909

View Period (Months):
Download: CSV JSON XML
  • Record Coolest
  • Bottom ⅒
  • Bottom ⅓
  • Normal
  • Top ⅓
  • Top ⅒
  • Record Warmest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1909
1-Month		12.0°F
(-11.1°C)		23.0°F
(-5.0°C)		-11.0°F
(-6.1°C)		1st Coolest
Coolest to Date
1909
128th Warmest
Warmest since:
1980
Nov–Dec 1909
2-Month		22.6°F
(-5.2°C)		27.5°F
(-2.5°C)		-4.9°F
(-2.7°C)		4th Coolest
Coolest since:
1895
125th Warmest
Warmest since:
2017
Oct–Dec 1909
3-Month		30.5°F
(-0.8°C)		33.5°F
(0.8°C)		-3.0°F
(-1.6°C)		11th Coolest
Coolest since:
1898
118th Warmest
Warmest since:
1950, 2017
Ties: 1932, 1971
Sep–Dec 1909
4-Month		36.8°F
(2.7°C)		39.2°F
(4.0°C)		-2.4°F
(-1.3°C)		11th Coolest
Coolest since:
1898, 1912
118th Warmest
Warmest since:
2021
Aug–Dec 1909
5-Month		42.5°F
(5.8°C)		44.3°F
(6.8°C)		-1.8°F
(-1.0°C)		15th Coolest
Coolest since:
1912
114th Warmest
Warmest since:
2021
Ties: 1899, 1932
Jul–Dec 1909
6-Month		46.6°F
(8.1°C)		48.1°F
(8.9°C)		-1.5°F
(-0.8°C)		16th Coolest
Coolest since:
1912
113th Warmest
Warmest since:
2021
Ties: 1902, 1913, 1932, 1993
Jun–Dec 1909
7-Month		48.6°F
(9.2°C)		49.9°F
(9.9°C)		-1.3°F
(-0.7°C)		19th Coolest
Coolest since:
1912
110th Warmest
Warmest since:
2021
Ties: 1915, 1919, 1971
May–Dec 1909
8-Month		48.5°F
(9.2°C)		50.0°F
(10.0°C)		-1.5°F
(-0.8°C)		10th Coolest
Coolest since:
1912
119th Warmest
Warmest since:
2021
Ties: 1907, 1915, 1920, 1968
Apr–Dec 1909
9-Month		47.3°F
(8.5°C)		49.1°F
(9.5°C)		-1.8°F
(-1.0°C)		7th Coolest
Coolest since:
1912
122nd Warmest
Warmest since:
2021
Ties: 1968
Mar–Dec 1909
10-Month		45.6°F
(7.6°C)		47.5°F
(8.6°C)		-1.9°F
(-1.0°C)		5th Coolest
Coolest since:
1912
124th Warmest
Warmest since:
2012
Ties: 1916, 1924
Feb–Dec 1909
11-Month		43.5°F
(6.4°C)		45.5°F
(7.5°C)		-2.0°F
(-1.1°C)		5th Coolest
Coolest since:
1912
124th Warmest
Warmest since:
2017
Ties: 1923
Jan–Dec 1909
12-Month		42.0°F
(5.6°C)		43.4°F
(6.3°C)		-1.4°F
(-0.7°C)		16th Coolest
Coolest since:
1895, 1912
113th Warmest
Warmest since:
2012
Ties: 1923, 1964
Jul 1908–Dec 1909
18-Month		43.1°F
(6.2°C)		45.0°F
(7.2°C)		-1.9°F
(-1.0°C)		5th Coolest
Coolest since:
1912
123rd Warmest
Warmest since:
1934
Ties: 1898, 1899
Jan 1908–Dec 1909
24-Month		41.6°F
(5.3°C)		43.4°F
(6.3°C)		-1.8°F
(-1.0°C)		3rd Coolest
Coolest since:
1913
125th Warmest
Warmest since:
2018
Ties: 1912, 1917
Jan 1907–Dec 1909
36-Month		42.4°F
(5.8°C)		43.4°F
(6.3°C)		-1.0°F
(-0.5°C)		15th Coolest
Coolest since:
1899, 1913
112th Warmest
Warmest since:
2017
Ties: 1900, 1904, 1915, 1925, 1931, 1932
Jan 1906–Dec 1909
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: 1912, 1930
Jan 1905–Dec 1909
60-Month		42.5°F
(5.8°C)		43.4°F
(6.3°C)		-0.9°F
(-0.5°C)		13th Coolest
Coolest since:
1899
112th Warmest
Warmest since:
2018
Ties: 1906, 1914, 1924

Citing This Page