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 2020. For more information, please see Climatological Rankings.


Upper Colorado River Basin

Average Temperature Rankings, December 1999

View Period (Months):All1234567891011121824364860
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
December 1999
1-Month
25.0°F
(-3.9°C)
23.0°F
(-5.0°C)
2.0°F
(1.1°C)
91st Coolest Coolest since: 1998 1909
35th Warmest Warmest since: 1996 1980
Ties: 1940, 1996
Nov–Dec 1999
2-Month
32.1°F
(0.1°C)
27.5°F
(-2.5°C)
4.6°F
(2.6°C)
120th Coolest Coolest since: 1998 1895
6th Warmest Warmest since: 1995 2017
Oct–Dec 1999
3-Month
37.5°F
(3.1°C)
33.5°F
(0.8°C)
4.0°F
(2.3°C)
122nd Coolest Coolest since: 1998 1898
4th Warmest Warmest since: 1950 1950, 2017
Sep–Dec 1999
4-Month
41.9°F
(5.5°C)
39.2°F
(4.0°C)
2.7°F
(1.5°C)
111th Coolest Coolest since: 1998 1898, 1912
15th Warmest Warmest since: 1995 2017
Ties: 1958
Aug–Dec 1999
5-Month
46.5°F
(8.1°C)
44.4°F
(6.9°C)
2.1°F
(1.2°C)
110th Coolest Coolest since: 1998 1912
16th Warmest Warmest since: 1998 2017
Ties: 1937, 1950, 1962, 1998
Jul–Dec 1999
6-Month
50.0°F
(10.0°C)
48.1°F
(8.9°C)
1.9°F
(1.1°C)
108th Coolest Coolest since: 1997 1912
18th Warmest Warmest since: 1998 2017
Ties: 1937, 1981
Jun–Dec 1999
7-Month
51.4°F
(10.8°C)
49.8°F
(9.9°C)
1.6°F
(0.9°C)
104th Coolest Coolest since: 1998 1912
22nd Warmest Warmest since: 1998 2017
Ties: 1910, 1934, 1998
May–Dec 1999
8-Month
51.1°F
(10.6°C)
50.0°F
(10.0°C)
1.1°F
(0.6°C)
90th Coolest Coolest since: 1997 1912
36th Warmest Warmest since: 1998 2012
Ties: 1962
Apr–Dec 1999
9-Month
49.8°F
(9.9°C)
49.1°F
(9.5°C)
0.7°F
(0.4°C)
81st Coolest Coolest since: 1997 1912
45th Warmest Warmest since: 1998 2012
Ties: 1921, 1959, 1992
Mar–Dec 1999
10-Month
48.7°F
(9.3°C)
47.4°F
(8.6°C)
1.3°F
(0.7°C)
97th Coolest Coolest since: 1998 1912
29th Warmest Warmest since: 1996 2012
Ties: 1933, 1936, 1958, 1992, 2013
Feb–Dec 1999
11-Month
47.0°F
(8.3°C)
45.5°F
(7.5°C)
1.5°F
(0.8°C)
104th Coolest Coolest since: 1998 1912
22nd Warmest Warmest since: 1996 2017
Ties: 1995, 2002, 2004, 2005, 2006
Jan–Dec 1999
12-Month
45.4°F
(7.4°C)
43.5°F
(6.4°C)
1.9°F
(1.0°C)
110th Coolest Coolest since: 1998 1895, 1912
16th Warmest Warmest since: 1994 2012
Jul 1998–Dec 1999
18-Month
47.1°F
(8.4°C)
45.0°F
(7.2°C)
2.1°F
(1.2°C)
115th Coolest Coolest since: 1998 1912
10th Warmest Warmest since: 1981 1934
Jan 1998–Dec 1999
24-Month
45.2°F
(7.3°C)
43.5°F
(6.4°C)
1.7°F
(0.9°C)
107th Coolest Coolest since: 1998 1913
18th Warmest Warmest since: 1996 2018
Ties: 1934, 1996, 2005
Jan 1997–Dec 1999
36-Month
44.8°F
(7.1°C)
43.4°F
(6.3°C)
1.4°F
(0.8°C)
104th Coolest Coolest since: 1998 1899, 1913
20th Warmest Warmest since: 1997 2017
Ties: 1997, 2009
Jan 1996–Dec 1999
48-Month
44.9°F
(7.2°C)
43.4°F
(6.3°C)
1.5°F
(0.9°C)
105th Coolest Coolest since: 1998 1898
18th Warmest Warmest since: 1997 2018
Ties: 2009, 2013
Jan 1995–Dec 1999
60-Month
45.0°F
(7.2°C)
43.4°F
(6.3°C)
1.6°F
(0.9°C)
106th Coolest Coolest since: 1998 1899
16th Warmest Warmest since: 1998 2018
Ties: 1998, 2009

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published September 2020, retrieved on September 29, 2020 from https://www.ncdc.noaa.gov/cag/