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
19181210.18%
19191231.76%
192012-6.34%
19211246.56%
192212-12.93%
192312-2.04%
192412-35.39%
19251219.07%
192612-15.94%
19271214.74%
1928125.14%
192912-36.74%
19301242.60%
193112-9.44%
193212-34.66%
193312-85.82%
19341246.15%
193512-53.37%
193612-1.81%
193712-27.00%
193812-0.39%
193912-6.60%
1940125.24%
194112-9.66%
194212-66.67%
19431248.44%
194412-10.29%
194512-59.78%
19461229.56%
1947126.43%
1948128.10%
1949128.38%
195012-14.24%
19511238.39%
195212-38.52%
195312-17.97%
195412-16.63%
1955125.54%
195612-52.58%
195712-33.66%
195812-31.21%
195912-12.94%
19601213.50%
196112-4.47%
196212-29.23%
196312-3.89%
196412-35.34%
1965121.68%
196612-40.63%
19671239.63%
196812-35.25%
196912-27.78%
19701216.29%
19711256.77%
197212-23.82%
197312-40.05%
197412-28.62%
197512-20.92%
197612-21.81%
197712-9.98%
19781256.65%
197912-11.31%
198012-54.68%
198112-33.08%
198212-18.55%
198312-44.06%
19841236.27%
19851211.28%
1986124.92%
19871211.95%
19881237.61%
19891212.45%
19901271.36%
199112-0.96%
19921240.52%
1993124.21%
19941220.87%
199512-55.06%
199612-32.15%
1997124.22%
1998121.80%
19991222.84%
2000121.33%
200112-37.33%
200212-12.10%
200312-1.76%
20041249.78%
2005125.92%
200612-4.63%
200712-3.97%
200812-14.33%
200912-23.36%
201012-16.60%
20111294.32%
201212-15.83%
20131251.00%