FREDERICK WFMD, MARYLAND

Period of Record General Climate Summary - Growing Degree Days

From Year=1948 To Year=2012
Station:(183350) FREDERICK WFMD
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 25 37 140 382 677 924 1099 1043 795 486 181 50 5839
40 S 25 62 202 583 1261 2184 3283 4327 5121 5608 5788 5839 5839
45 M 10 13 74 249 523 774 944 888 645 338 97 19 4573
45 S 10 23 97 345 868 1642 2586 3474 4119 4457 4554 4573 4573
50 M 3 4 36 144 371 624 789 733 496 208 43 6 3457
50 S 3 8 43 188 559 1183 1972 2705 3201 3408 3451 3457 3457
55 M 1 1 14 75 234 474 634 578 351 110 15 1 2489
55 S 1 2 16 91 325 799 1433 2012 2363 2473 2487 2489 2489
60 M 0 0 4 33 123 328 479 423 222 48 4 0 1664
60 S 0 0 4 37 160 488 967 1390 1612 1660 1664 1664 1664
Corn Growing Degree Days
50 M 15 25 94 232 415 605 747 706 509 293 102 30 3773
50 S 15 40 134 366 781 1386 2133 2839 3348 3641 3743 3773 3773
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