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
1918095.89%
191909-2.27%
192009-45.98%
192109-7.20%
192209-20.87%
19230951.03%
19240921.94%
192509104.07%
192609-1.93%
192709-20.36%
19280947.74%
19290931.82%
1930096.53%
193109-18.19%
19320912.95%
193309-37.03%
193409-35.19%
193509-16.30%
193609-35.40%
193709-11.63%
19380935.32%
193909-1.17%
19400935.14%
194109-34.22%
19420922.78%
194309-7.44%
194409-0.69%
19450910.09%
194609-16.61%
19470911.91%
1948094.37%
194909-4.23%
19500910.62%
1951090.60%
195209-21.65%
195309-8.39%
19540910.07%
1955094.44%
195609-8.19%
1957096.09%
195809-3.89%
195909-17.19%
19600932.61%
19610948.51%
196209-11.04%
196309-29.55%
196409-21.79%
19650942.57%
196609-10.33%
196709-13.09%
196809-29.43%
196909-53.68%
197009-28.41%
197109-9.63%
197209-12.24%
197309-30.15%
197409-25.01%
19750911.68%
1976090.27%
19770936.13%
197809-20.44%
197909-18.19%
198009-21.98%
198109-27.46%
19820943.05%
198309-13.20%
198409-52.84%
19850942.67%
19860919.89%
19870929.83%
198809-30.37%
19890912.53%
19900935.25%
199109-8.85%
199209-18.05%
19930947.99%
199409-8.55%
199509-7.90%
199609-19.89%
1997097.96%
1998098.19%
1999096.94%
20000922.38%
200109-25.23%
20020930.65%
200309-13.37%
20040916.58%
20050956.90%
2006092.06%
20070940.17%
200809-19.62%
200909-19.93%
201009-22.38%
201109-18.11%
20120944.93%
20130931.27%