LAKE YELLOWSTONE, WYOMING

Period of Record General Climate Summary - Heating Degree Days

Station:(485345) LAKE YELLOWSTONE
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1686 1457 1423 1092 820 539 313 340 589 914 1275 1583 12030
60 1531 1316 1268 942 665 390 167 193 439 759 1125 1428 10222
57 1438 1231 1175 852 572 303 96 116 351 666 1035 1335 9169
55 1376 1175 1113 792 510 248 60 76 293 604 975 1273 8495
50 1221 1034 958 642 357 130 14 22 168 449 825 1118 6938
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 Jul 28, 2006
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