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 1917

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
December 1917
1-Month
30.5°F
(-0.8°C)
23.0°F
(-5.0°C)
7.5°F
(4.2°C)
127th Coolest
Coolest since:
1909
2nd Warmest
Warmest to Date
1980
Nov–Dec 1917
2-Month
33.2°F
(0.7°C)
27.5°F
(-2.5°C)
5.7°F
(3.2°C)
125th Coolest
Coolest since:
1895
4th Warmest
Warmest to Date
2017
Oct–Dec 1917
3-Month
36.9°F
(2.7°C)
33.5°F
(0.8°C)
3.4°F
(1.9°C)
120th Coolest
Coolest since:
1898
9th Warmest
Warmest to Date
1950, 2017
Ties: 1962, 1995
Sep–Dec 1917
4-Month
41.8°F
(5.4°C)
39.2°F
(4.0°C)
2.6°F
(1.4°C)
111th Coolest
Coolest since:
1898, 1912
18th Warmest
Warmest to Date
2021
Aug–Dec 1917
5-Month
45.9°F
(7.7°C)
44.3°F
(6.8°C)
1.6°F
(0.9°C)
99th Coolest
Coolest since:
1912
30th Warmest
Warmest since:
2021
Jul–Dec 1917
6-Month
49.6°F
(9.8°C)
48.1°F
(8.9°C)
1.5°F
(0.9°C)
100th Coolest
Coolest since:
1912
29th Warmest
Warmest since:
2021
Ties: 1910, 1921, 1988
Jun–Dec 1917
7-Month
50.8°F
(10.4°C)
49.9°F
(9.9°C)
0.9°F
(0.5°C)
82nd Coolest
Coolest since:
1912
47th Warmest
Warmest since:
2021
May–Dec 1917
8-Month
50.1°F
(10.1°C)
50.0°F
(10.0°C)
0.1°F
(0.1°C)
56th Coolest
Coolest since:
1912
73rd Warmest
Warmest since:
2021
Ties: 1900, 1944, 1956, 1979, 1986
Apr–Dec 1917
9-Month
48.6°F
(9.2°C)
49.1°F
(9.5°C)
-0.5°F
(-0.3°C)
41st Coolest
Coolest since:
1912
88th Warmest
Warmest since:
2021
Ties: 1897, 1941, 1972, 1978
Mar–Dec 1917
10-Month
46.2°F
(7.9°C)
47.5°F
(8.6°C)
-1.3°F
(-0.7°C)
16th Coolest
Coolest since:
1912
113th Warmest
Warmest since:
2012
Ties: 1945, 1951
Feb–Dec 1917
11-Month
44.0°F
(6.7°C)
45.5°F
(7.5°C)
-1.5°F
(-0.8°C)
13th Coolest
Coolest since:
1912
116th Warmest
Warmest since:
2017
Ties: 1911, 1964
Jan–Dec 1917
12-Month
41.5°F
(5.3°C)
43.4°F
(6.3°C)
-1.9°F
(-1.0°C)
6th Coolest
Coolest since:
1895, 1912
123rd Warmest
Warmest since:
2012
Jul 1916–Dec 1917
18-Month
42.8°F
(6.0°C)
45.0°F
(7.2°C)
-2.2°F
(-1.2°C)
3rd Coolest
Coolest since:
1912
125th Warmest
Warmest since:
1934
Ties: 1903
Jan 1916–Dec 1917
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: 1909, 1912
Jan 1915–Dec 1917
36-Month
41.9°F
(5.5°C)
43.4°F
(6.3°C)
-1.5°F
(-0.8°C)
4th Coolest
Coolest since:
1899, 1913
123rd Warmest
Warmest since:
2017
Ties: 1897
Jan 1914–Dec 1917
48-Month
42.1°F
(5.6°C)
43.4°F
(6.3°C)
-1.3°F
(-0.7°C)
5th Coolest
Coolest since:
1898
121st Warmest
Warmest since:
2018
Ties: 1918, 1919, 1920
Jan 1913–Dec 1917
60-Month
42.0°F
(5.6°C)
43.4°F
(6.3°C)
-1.4°F
(-0.7°C)
3rd Coolest
Coolest since:
1899
122nd Warmest
Warmest since:
2018
Ties: 1920

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