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.

California River Basin

Average Temperature Rankings, February 1991

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2023)
Warmest/Coolest
Since
Record
February 1991
1-Month
51.5°F
(10.8°C)
45.3°F
(7.4°C)
6.2°F
(3.4°C)
126th Coolest
Coolest since:
1903
4th Warmest
Warmest since:
2015
Jan–Feb 1991
2-Month
47.6°F
(8.7°C)
43.9°F
(6.6°C)
3.7°F
(2.1°C)
122nd Coolest
Coolest since:
1949
8th Warmest
Warmest since:
2015
Dec 1990–Feb 1991
3-Month
44.5°F
(6.9°C)
43.6°F
(6.4°C)
0.9°F
(0.5°C)
82nd Coolest
Coolest since:
1949
47th Warmest
Warmest since:
2015
Ties: 1896, 1983
Nov 1990–Feb 1991
4-Month
45.9°F
(7.7°C)
45.1°F
(7.3°C)
0.8°F
(0.4°C)
82nd Coolest
Coolest since:
1949
47th Warmest
Warmest since:
2015
Ties: 1987, 2005, 2007
Oct 1990–Feb 1991
5-Month
49.1°F
(9.5°C)
48.0°F
(8.9°C)
1.1°F
(0.6°C)
96th Coolest
Coolest since:
1949
33rd Warmest
Warmest since:
2015
Ties: 1905, 1943, 1954, 1970, 1988, 2012
Sep 1990–Feb 1991
6-Month
52.6°F
(11.4°C)
51.4°F
(10.8°C)
1.2°F
(0.6°C)
96th Coolest
Coolest since:
1917, 1949
33rd Warmest
Warmest since:
2015
Ties: 1918, 1953, 1977, 1988, 1997, 2010, 2017
Aug 1990–Feb 1991
7-Month
55.6°F
(13.1°C)
54.6°F
(12.6°C)
1.0°F
(0.5°C)
90th Coolest
Coolest since:
1917
39th Warmest
Warmest since:
2015
Ties: 1905, 1918
Jul 1990–Feb 1991
8-Month
58.2°F
(14.6°C)
57.1°F
(13.9°C)
1.1°F
(0.7°C)
93rd Coolest
Coolest since:
1917
36th Warmest
Warmest since:
2015
Ties: 1953
Jun 1990–Feb 1991
9-Month
59.4°F
(15.2°C)
58.3°F
(14.6°C)
1.1°F
(0.6°C)
95th Coolest
Coolest since:
1917
34th Warmest
Warmest since:
2015
Ties: 1941, 1951, 1963, 1970
May 1990–Feb 1991
10-Month
59.5°F
(15.3°C)
58.6°F
(14.8°C)
0.9°F
(0.5°C)
92nd Coolest
Coolest since:
1917
37th Warmest
Warmest since:
2015
Ties: 1934, 1967, 1981, 1988, 1993, 2008
Apr 1990–Feb 1991
11-Month
59.4°F
(15.2°C)
58.1°F
(14.5°C)
1.3°F
(0.7°C)
104th Coolest
Coolest since:
1949
25th Warmest
Warmest since:
2015
Ties: 1935, 1967, 1993, 1998, 2004, 2005, 2006
Mar 1990–Feb 1991
12-Month
58.7°F
(14.8°C)
57.4°F
(14.1°C)
1.3°F
(0.7°C)
103rd Coolest
Coolest since:
1949
26th Warmest
Warmest since:
2015
Ties: 1961, 1982, 1993, 2006
Sep 1989–Feb 1991
18-Month
56.3°F
(13.5°C)
55.4°F
(13.0°C)
0.9°F
(0.5°C)
96th Coolest
Coolest since:
1913, 1949
32nd Warmest
Warmest since:
2015
Ties: 1959, 1961, 1978, 1989
Mar 1989–Feb 1991
24-Month
58.5°F
(14.7°C)
57.4°F
(14.1°C)
1.1°F
(0.6°C)
102nd Coolest
Coolest since:
1913
26th Warmest
Warmest since:
2015, 2016
Ties: 2007
Mar 1988–Feb 1991
36-Month
58.4°F
(14.7°C)
57.4°F
(14.1°C)
1.0°F
(0.6°C)
102nd Coolest
Coolest since:
1914
25th Warmest
Warmest since:
2016
Ties: 1993, 1995, 1996, 1999
Mar 1987–Feb 1991
48-Month
58.4°F
(14.7°C)
57.4°F
(14.1°C)
1.0°F
(0.6°C)
102nd Coolest
Coolest since:
1913
24th Warmest
Warmest to Date
2018
Ties: 1993, 2012
Mar 1986–Feb 1991
60-Month
58.4°F
(14.7°C)
57.3°F
(14.1°C)
1.1°F
(0.6°C)
102nd Coolest
Coolest since:
1913
23rd Warmest
Warmest to Date
2018
Ties: 1995, 1996, 2000, 2003, 2012

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