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
19181220.11%
191912-10.52%
19201215.72%
19211220.80%
19221223.39%
19231217.00%
19241211.39%
19251220.63%
192612-2.55%
192712-12.83%
19281211.71%
19291231.20%
19301211.72%
193112-3.59%
1932125.32%
193312-12.59%
193412-24.55%
19351223.31%
193612-3.06%
1937129.77%
1938129.59%
193912-0.96%
194012-6.27%
1941125.51%
1942120.12%
19431210.82%
19441220.27%
1945125.88%
19461222.57%
194712-0.20%
1948128.63%
19491215.62%
195012-4.31%
1951128.96%
19521210.02%
195312-18.53%
195412-6.15%
19551213.48%
195612-1.59%
195712-0.94%
1958121.84%
195912-3.01%
1960126.36%
1961128.61%
1962120.88%
19631226.34%
1964122.33%
19651211.26%
196612-8.77%
19671216.34%
196812-14.60%
196912-23.72%
197012-3.50%
197112-3.86%
197212-14.01%
197312-8.94%
197412-19.10%
197512-6.43%
197612-6.62%
1977123.53%
197812-4.96%
1979126.92%
1980121.09%
1981125.18%
19821211.58%
198312-14.29%
198412-9.59%
19851214.81%
198612-4.65%
198712-2.98%
1988120.16%
19891211.63%
19901218.22%
199112-1.85%
199212-0.10%
19931211.58%
19941210.09%
199512-15.37%
1996121.36%
199712-7.76%
19981211.37%
1999120.42%
20001212.57%
2001125.16%
20021215.13%
20031210.71%
2004129.07%
2005125.48%
2006126.36%
200712-6.43%
2008124.24%
20091218.88%
201012-0.07%
20111216.59%
2012129.89%
20131225.10%