JORDAN, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(244522) JORDAN
From Year=1905 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 1523 1244 1020 610 323 101 13 30 224 571 1008 1374 8041
60 1368 1103 865 464 201 39 2 8 127 421 858 1219 6675
57 1275 1018 772 380 140 19 1 3 84 338 768 1126 5924
55 1213 961 710 327 106 11 0 1 62 286 708 1064 5451
50 1058 820 559 208 47 2 0 0 27 174 560 909 4365
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