Regional Rankings

Regional Data Info
Please note, 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.

Northwest

December 1939 Average Temperature Rankings

View Period (Months):
  • Record Coolest
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  • Bottom ⅓
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  • Top ⅓
  • Top ⅒
  • Record Warmest
PeriodValue
1901-2000
Mean		AnomalyRank
(1895-2025)
Coolest/Warmest
Since		Record
December 1939
1-Month
35.4°F
(1.9°C)
28.8°F
(-1.8°C)
6.6°F128th Coolest
Coolest since:
1990
3rd Warmest
Warmest since:
1917
Nov–Dec 1939
2-Month
36.6°F
(2.6°C)
32.1°F
(0.1°C)
4.5°F129th Coolest
Coolest since:
1985
2nd Warmest
Warmest since:
1917
Oct–Dec 1939
3-Month
40.0°F
(4.4°C)
36.9°F
(2.7°C)
3.1°F126th Coolest
Coolest since:
1985
5th Warmest
Warmest since:
1917
Sep–Dec 1939
4-Month
44.5°F
(6.9°C)
41.8°F
(5.4°C)
2.7°F125th Coolest
Coolest since:
1985
6th Warmest
Warmest since:
1917
Aug–Dec 1939
5-Month
48.6°F
(9.2°C)
46.1°F
(7.8°C)
2.5°F125th Coolest
Coolest since:
1985
6th Warmest
Warmest since:
2024
Jul–Dec 1939
6-Month
51.5°F
(10.8°C)
49.2°F
(9.6°C)
2.3°F122nd Coolest
Coolest since:
1985
9th Warmest
Warmest since:
2024
Jun–Dec 1939
7-Month
52.0°F
(11.1°C)
50.4°F
(10.2°C)
1.6°F114th Coolest
Coolest since:
1916
17th Warmest
Warmest since:
2024
May–Dec 1939
8-Month
52.1°F
(11.2°C)
50.4°F
(10.2°C)
1.7°F120th Coolest
Coolest since:
1916
11th Warmest
Warmest since:
2023
Apr–Dec 1939
9-Month
51.5°F
(10.8°C)
49.6°F
(9.8°C)
1.9°F122nd Coolest
Coolest since:
1916
9th Warmest
Warmest since:
2021
Mar–Dec 1939
10-Month
50.1°F
(10.1°C)
48.3°F
(9.1°C)
1.8°F116th Coolest
Coolest since:
1916
15th Warmest
Warmest since:
2015
Feb–Dec 1939
11-Month
48.0°F
(8.9°C)
46.7°F
(8.2°C)
1.3°F109th Coolest
Coolest since:
1955
22nd Warmest
Warmest since:
2015
Jan–Dec 1939
12-Month
46.5°F
(8.1°C)
45.1°F
(7.3°C)
1.4°F109th Coolest
Coolest since:
1916
22nd Warmest
Warmest since:
2015
Jul 1938–Dec 1939
18-Month
47.7°F
(8.7°C)
46.5°F
(8.1°C)
1.2°F110th Coolest
Coolest since:
1985
20th Warmest
Warmest since:
2015
Jan 1938–Dec 1939
24-Month
46.2°F
(7.9°C)
45.1°F
(7.3°C)
1.1°F100th Coolest
Coolest since:
1917
30th Warmest
Warmest since:
2015
Jan 1937–Dec 1939
36-Month
45.6°F
(7.6°C)
45.1°F
(7.3°C)
0.5°F80th Coolest
Coolest since:
1913
49th Warmest
Warmest since:
2016
Jan 1936–Dec 1939
48-Month
45.5°F
(7.5°C)
45.1°F
(7.3°C)
0.4°F80th Coolest
Coolest since:
1913, 1914
48th Warmest
Warmest since:
2016, 2017
Jan 1935–Dec 1939
60-Month
45.3°F
(7.4°C)
45.0°F
(7.2°C)
0.3°F73rd Coolest
Coolest since:
1913
54th Warmest
Warmest since:
2018

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