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
19180530.33%
191905-5.94%
192005-17.96%
1921054.07%
192205-5.89%
19230522.63%
19240527.16%
192505-19.26%
192605-10.91%
192705-19.95%
192805-18.05%
1929052.62%
193005-29.32%
1931056.29%
193205-21.26%
19330539.99%
193405-37.38%
193505-21.66%
193605-20.26%
193705-15.83%
1938055.38%
193905-22.54%
194005-8.02%
19410543.86%
19420514.71%
194305-2.31%
19440565.44%
194505-17.53%
19460546.62%
194705-20.53%
194805-45.12%
194905-0.95%
195005-13.04%
195105-29.52%
1952055.16%
195305-11.55%
195405-39.23%
19550514.22%
1956050.65%
195705-23.40%
19580536.39%
1959055.51%
1960054.42%
196105-20.90%
19620538.53%
196305-5.55%
19640525.61%
19650514.75%
19660516.52%
196705-38.59%
19680524.70%
196905-15.06%
197005-21.93%
19710513.55%
197205-23.26%
197305-0.06%
197405-50.84%
197505-22.98%
1976054.27%
19770521.80%
197805-24.98%
197905-35.21%
1980051.39%
198105-22.60%
19820511.29%
198305-18.62%
198405-18.81%
19850512.23%
198605-24.38%
1987051.18%
19880549.02%
19890553.64%
1990051.68%
199105-10.69%
199205-14.83%
199305-15.39%
19940513.71%
19950528.30%
1996057.83%
199705-0.72%
19980591.65%
199905-14.63%
200005-13.55%
200105-12.38%
20020515.10%
2003051.90%
20040578.62%
20050524.66%
200605-23.01%
200705-5.61%
200805-23.22%
200905-12.65%
201005-24.78%
201105-22.32%
20120516.02%
20130520.14%
20140517.86%