Heavy users of electrical power, such as data centers, can estimate the power needs for a month based on the number of heating degree-days (HDD) or cooling degree-days (CDD). The following are three years of monthly data sets for San Diego, California, 5/1/2012- 4/1/2015, assuming a base temperature of 65 degrees Fahrenheit. (Source)
HDD, 36 monthly observations:
77 48 8 0 0 25 122 251 312 256 194 128 43 35 1 2 5 49 89 220 169 138 81 76 23 4 0 0 0 3 66 164 175 102 72 54
CDD, 36 monthly observations:
14 31 90 241 260 136 23 2 16 12 12 16 40 61 134 144 175 67 42 28 38 16 35 62 141 81 238 251 292 196 78 17 29 38 98 58
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