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
19180571.48%
191905-29.79%
192005-27.46%
19210543.78%
1922058.71%
19230544.24%
19240525.97%
19250516.38%
19260522.80%
192705-8.27%
192805-18.90%
19290527.50%
19300524.83%
193105-19.63%
193205-36.54%
19330510.45%
193405-21.90%
19350560.73%
193605-17.30%
193705-16.76%
193805-1.58%
193905-9.67%
194005-18.81%
19410527.12%
1942052.99%
194305-7.80%
19440531.49%
194505-3.81%
19460544.38%
1947051.92%
19480515.32%
1949058.23%
195005-13.35%
195105-5.01%
19520514.41%
195305-30.82%
195405-5.35%
19550524.14%
195605-3.12%
195705-17.69%
19580514.10%
195905-2.46%
196005-14.49%
19610510.88%
19620520.27%
19630584.42%
19640530.94%
19650544.97%
196605-1.71%
19670542.75%
196805-3.92%
196905-23.91%
1970052.34%
197105-19.94%
197205-19.04%
197305-7.79%
197405-31.67%
1975051.21%
1976051.87%
19770543.57%
197805-25.66%
19790530.33%
198005-4.36%
198105-10.82%
19820530.52%
1983051.46%
198405-15.63%
19850521.35%
198605-29.35%
198705-28.44%
19880517.99%
19890511.01%
19900513.07%
19910523.38%
199205-6.70%
199305-20.71%
19940521.95%
1995055.86%
199605-11.28%
199705-28.85%
19980547.78%
1999054.25%
200005-15.39%
20010521.74%
20020530.37%
200305-9.42%
20040530.24%
200505-3.67%
2006054.19%
200705-19.22%
20080524.69%
20090528.87%
201005-1.73%
201105-24.02%
2012058.08%
20130510.14%
201405-14.75%