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
19180556.36%
191905-30.84%
19200529.48%
19210551.02%
19220524.69%
19230551.94%
19240515.38%
192505-7.78%
19260512.07%
192705-8.58%
1928056.96%
19290558.62%
1930055.07%
193105-16.49%
19320512.98%
1933058.02%
193405-27.70%
19350560.78%
193605-18.80%
19370536.55%
193805-2.09%
193905-5.91%
194005-19.12%
19410515.86%
1942058.11%
1943053.20%
19440539.72%
1945052.48%
19460520.83%
194705-0.69%
19480512.28%
19490529.38%
195005-6.93%
1951052.77%
19520524.26%
195305-22.67%
195405-8.87%
19550528.78%
1956056.25%
19570516.23%
195805-5.68%
1959051.32%
1960051.27%
196105-1.72%
19620524.68%
19630571.30%
19640528.69%
19650519.31%
196605-6.76%
19670519.51%
1968053.60%
196905-28.14%
197005-10.52%
197105-18.90%
197205-22.58%
197305-6.63%
197405-28.78%
1975050.79%
197605-2.24%
19770530.82%
197805-27.18%
197905-2.87%
1980054.38%
19810511.21%
19820520.02%
198305-17.51%
198405-3.80%
19850520.44%
198605-21.07%
198705-14.67%
1988057.80%
19890521.16%
19900520.29%
19910510.78%
199205-4.70%
1993057.30%
1994055.70%
199505-4.85%
19960517.07%
199705-18.25%
19980512.74%
199905-2.11%
2000055.64%
20010528.62%
20020529.23%
2003054.88%
2004059.16%
2005053.77%
2006051.51%
200705-17.77%
20080518.51%
20090553.34%
201005-15.12%
2011054.27%
20120511.08%
20130521.74%
201405-5.55%