Climate at a Glance

Regional Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2021. For more information, please see Climatological Rankings.


Pacific Northwest Basin

Average Temperature Rankings, December 1999

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
December 1999
1-Month
31.0°F
(-0.6°C)
28.1°F
(-2.2°C)
2.9°F
(1.6°C)
104th Coolest Coolest since: 1998 1990
23rd Warmest Warmest since: 1980 1917
Ties: 1966, 2019
Nov–Dec 1999
2-Month
35.8°F
(2.1°C)
31.4°F
(-0.3°C)
4.4°F
(2.4°C)
124th Coolest Coolest since: 1998 1985
3rd Warmest Warmest since: 1939 1917
Ties: 1933
Oct–Dec 1999
3-Month
39.6°F
(4.2°C)
36.2°F
(2.3°C)
3.4°F
(1.9°C)
124th Coolest Coolest since: 1998 1985
3rd Warmest Warmest since: 1933 1917
Sep–Dec 1999
4-Month
43.7°F
(6.5°C)
41.1°F
(5.1°C)
2.6°F
(1.4°C)
121st Coolest Coolest since: 1998 1985
6th Warmest Warmest since: 1953 1917
Aug–Dec 1999
5-Month
47.9°F
(8.8°C)
45.5°F
(7.5°C)
2.4°F
(1.3°C)
122nd Coolest Coolest since: 1998 1985
5th Warmest Warmest since: 1939 1917, 2014
Ties: 2012
Jul–Dec 1999
6-Month
50.4°F
(10.2°C)
48.7°F
(9.3°C)
1.7°F
(0.9°C)
113th Coolest Coolest since: 1997 1985
14th Warmest Warmest since: 1998 2014
Ties: 1933, 2001
Jun–Dec 1999
7-Month
51.1°F
(10.6°C)
49.8°F
(9.9°C)
1.3°F
(0.7°C)
105th Coolest Coolest since: 1997 1916
22nd Warmest Warmest since: 1998 2015
Ties: 1934, 1974, 1987
May–Dec 1999
8-Month
50.6°F
(10.3°C)
49.8°F
(9.9°C)
0.8°F
(0.4°C)
94th Coolest Coolest since: 1996 1916
33rd Warmest Warmest since: 1998 2015
Ties: 1938, 1963, 1994
Apr–Dec 1999
9-Month
49.5°F
(9.7°C)
49.0°F
(9.4°C)
0.5°F
(0.3°C)
80th Coolest Coolest since: 1996 1916
47th Warmest Warmest since: 1998 2015
Ties: 1941, 1963, 1973, 1977, 1980, 1990, 1995
Mar–Dec 1999
10-Month
48.2°F
(9.0°C)
47.7°F
(8.7°C)
0.5°F
(0.3°C)
83rd Coolest Coolest since: 1996 1916
44th Warmest Warmest since: 1998 2015
Ties: 1900, 1904, 1933, 1963, 1973, 1995
Feb–Dec 1999
11-Month
46.6°F
(8.1°C)
46.1°F
(7.8°C)
0.5°F
(0.3°C)
79th Coolest Coolest since: 1996 1955
48th Warmest Warmest since: 1998 2015
Ties: 1910, 1953
Jan–Dec 1999
12-Month
45.3°F
(7.4°C)
44.4°F
(6.9°C)
0.9°F
(0.5°C)
91st Coolest Coolest since: 1996 1916
36th Warmest Warmest since: 1998 2015
Ties: 1900, 1966, 2000
Jul 1998–Dec 1999
18-Month
47.2°F
(8.4°C)
45.9°F
(7.7°C)
1.3°F
(0.7°C)
110th Coolest Coolest since: 1997 1985
16th Warmest Warmest since: 1998 2015
Ties: 1988
Jan 1998–Dec 1999
24-Month
45.8°F
(7.7°C)
44.4°F
(6.9°C)
1.4°F
(0.8°C)
106th Coolest Coolest since: 1998 1917
20th Warmest Warmest since: 1998 2015
Ties: 1998, 2006
Jan 1997–Dec 1999
36-Month
45.7°F
(7.6°C)
44.5°F
(6.9°C)
1.2°F
(0.7°C)
109th Coolest Coolest since: 1998 1913
16th Warmest Warmest since: 1992 2016
Ties: 1989, 2000, 2019
Jan 1996–Dec 1999
48-Month
45.5°F
(7.5°C)
44.5°F
(6.9°C)
1.0°F
(0.6°C)
102nd Coolest Coolest since: 1997 1913, 1914, 1919
22nd Warmest Warmest since: 1998 2016, 2017
Ties: 1994, 1997, 2008
Jan 1995–Dec 1999
60-Month
45.5°F
(7.5°C)
44.4°F
(6.9°C)
1.1°F
(0.6°C)
104th Coolest Coolest since: 1997 1913
19th Warmest Warmest since: 1998 2018
Ties: 1941, 1942, 1991, 1995

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published September 2021, retrieved on September 17, 2021 from https://www.ncdc.noaa.gov/cag/