COLLEGE PARK, MARYLAND

Period of Record General Climate Summary - Growing Degree Days

From Year=1894 To Year=1996
Station:(181995) COLLEGE PARK
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 49 55 194 424 742 971 1142 1084 860 531 226 69 6347
40 S 49 104 298 722 1464 2435 3577 4661 5521 6051 6277 6347 6347
45 M 21 24 109 287 587 821 987 929 710 381 131 30 5016
45 S 21 44 153 441 1028 1849 2835 3764 4474 4856 4986 5016 5016
50 M 8 8 56 175 434 671 832 774 560 246 66 11 3841
50 S 8 16 72 247 681 1352 2183 2957 3518 3764 3830 3841 3841
55 M 2 2 25 94 291 521 677 619 413 139 28 3 2815
55 S 2 5 30 124 415 936 1613 2232 2645 2784 2812 2815 2815
60 M 0 0 10 44 170 374 522 464 276 64 9 1 1935
60 S 0 1 11 55 225 599 1120 1585 1861 1925 1934 1935 1935
Corn Growing Degree Days
50 M 30 37 128 263 469 646 776 734 564 332 139 40 4158
50 S 30 67 195 457 926 1572 2348 3082 3646 3979 4118 4158 4158
Derived form the 1894-1996 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