BALTIMORE WSO ARPT, MARYLAND

Period of Record General Climate Summary - Growing Degree Days

From Year=1947 To Year=2012
Station:(180465) BALTIMORE WSO ARPT
Averages Daily Extremes
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 45 54 176 427 730 981 1157 1107 856 528 231 69 6362
40 S 45 99 275 702 1432 2413 3571 4678 5534 6062 6293 6362 6362
45 M 18 24 94 288 575 831 1002 952 706 377 132 29 5030
45 S 18 42 136 424 999 1830 2833 3785 4491 4868 5001 5030 5030
50 M 7 9 46 172 422 681 847 797 556 241 65 10 3853
50 S 7 16 61 233 655 1336 2184 2981 3537 3778 3843 3853 3853
55 M 2 2 19 90 278 531 692 642 409 133 25 3 2827
55 S 2 4 23 113 390 922 1614 2256 2665 2798 2823 2827 2827
60 M 0 0 7 41 158 383 537 487 270 61 8 1 1953
60 S 0 1 7 48 207 590 1127 1614 1884 1945 1952 1953 1953
Corn Growing Degree Days
50 M 26 33 103 242 444 656 797 763 555 306 125 37 4088
50 S 26 59 163 405 849 1505 2303 3066 3620 3926 4051 4088 4088
Derived form the 1947-2012 Data
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on May 22,
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Southeast Regional Climate Center, SERCC Webmaster