Alaska Statewide Anomalies

Alaska's weather observation history, much like its broader history, is unique and developed rapidly during the 20th Century. Therefore, NCDC uses a period of record for statewide-averaged temperature and precipitation that begins in 1918. Earlier statewide-averaged values are not calculated at this time. It should be noted that the methodology differs from that used for CONUS states, in that the Alaskan value represents a gridded approach (the statewide values are the composite of a set of grid boxes), and that coverage is not as complete as that for the CONUS. Alaska Statewide temperature and precipitation anomalies are calculated with respect to the 1971-2000 base period.


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DateAnomaly
191807-17.85%
1919078.08%
19200725.46%
1921075.65%
19220797.44%
192307-35.80%
19240752.02%
19250728.95%
1926074.24%
192707-14.45%
19280757.93%
19290740.71%
19300742.95%
19310742.18%
19320715.15%
193307-34.54%
193407-32.82%
19350716.44%
1936074.64%
19370720.46%
1938072.51%
19390725.52%
194007-11.56%
19410738.09%
1942070.61%
19430720.30%
1944077.59%
19450732.01%
194607-0.37%
19470711.48%
19480773.41%
1949070.27%
1950073.13%
195107-11.83%
19520720.77%
195307-30.93%
19540726.29%
1955071.30%
195607-6.16%
195707-29.22%
19580718.98%
19590746.69%
19600742.35%
19610734.14%
196207-12.07%
19630713.18%
196407-22.70%
196507-4.01%
1966071.16%
19670741.56%
196807-29.87%
19690713.21%
19700715.29%
1971076.08%
197207-41.84%
197307-15.82%
197407-3.84%
1975077.89%
197607-18.57%
197707-37.13%
197807-5.55%
19790711.91%
19800731.09%
19810744.36%
19820723.09%
198307-13.67%
1984078.51%
198507-25.07%
1986073.49%
198707-2.24%
198807-23.28%
19890717.35%
19900715.52%
199107-6.51%
199207-7.39%
199307-48.59%
19940711.55%
1995072.34%
199607-1.61%
199707-12.72%
19980721.25%
1999079.66%
20000749.76%
20010762.58%
200207-7.90%
20030711.70%
200407-12.98%
2005076.59%
200607-2.45%
2007075.42%
20080749.45%
200907-10.18%
20100740.32%
20110725.89%
20120747.44%
201307-3.28%
20140738.13%