YELLOWSTONE PARK, WYOMING

Period of Record General Climate Summary - Heating Degree Days

Station:(489905) YELLOWSTONE PARK
From Year=1894 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1397 1193 1132 814 556 309 94 122 375 703 1072 1350 9117
60 1242 1052 977 664 404 183 32 44 239 549 922 1195 7502
57 1149 967 884 574 317 123 15 21 172 457 832 1102 6613
55 1087 911 822 514 263 90 9 12 134 397 772 1040 6052
50 932 770 667 369 149 34 2 3 66 259 622 885 4758
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu