WILMINGTON WSO ARPT, DELAWARE

Period of Record General Climate Summary - Growing Degree Days

From Year=1948 To Year=2012
Station:(079595) WILMINGTON 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 33 41 148 387 697 951 1130 1082 833 505 215 60 6082
40 S 33 74 222 609 1307 2258 3388 4469 5302 5807 6023 6082 6082
45 M 12 16 75 252 542 801 975 927 683 355 119 23 4780
45 S 12 28 103 354 896 1698 2672 3599 4282 4637 4756 4780 4780
50 M 4 5 33 141 389 651 820 772 533 222 54 7 3631
50 S 4 9 42 183 572 1223 2043 2815 3348 3569 3624 3631 3631
55 M 1 1 12 70 248 501 665 617 386 120 20 2 2641
55 S 1 2 13 83 331 832 1497 2114 2499 2619 2639 2641 2641
60 M 0 0 4 29 135 353 510 462 248 53 5 0 1799
60 S 0 0 4 33 168 521 1031 1493 1741 1794 1799 1799 1799
Corn Growing Degree Days
50 M 18 23 82 213 415 636 785 750 537 287 110 28 3885
50 S 18 41 123 336 751 1388 2173 2923 3459 3746 3856 3885 3885
Derived form the 1948-2012 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