CLARKSVILLE 3 NNE, MARYLAND

Period of Record General Climate Summary - Growing Degree Days

From Year=1967 To Year=2004
Station:(181862) CLARKSVILLE 3 NNE
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 53 167 379 700 922 1085 1037 806 468 195 60 5904
40 S 33 86 253 632 1332 2254 3339 4375 5181 5649 5844 5904 5904
45 M 13 23 89 246 545 772 930 882 656 322 107 26 4611
45 S 13 36 126 372 917 1689 2619 3500 4156 4478 4585 4611 4611
50 M 4 8 42 139 393 622 775 727 506 196 52 9 3473
50 S 4 12 54 193 586 1208 1983 2710 3216 3412 3464 3473 3473
55 M 1 2 18 69 252 473 620 572 361 103 20 3 2492
55 S 1 3 21 90 342 814 1434 2006 2367 2470 2490 2492 2492
60 M 0 0 7 29 139 326 465 417 228 43 6 1 1660
60 S 0 0 7 36 174 501 966 1383 1611 1654 1660 1660 1660
Corn Growing Degree Days
50 M 24 41 119 248 444 610 731 700 525 299 123 39 3903
50 S 24 65 184 432 876 1487 2218 2917 3442 3741 3864 3903 3903
Derived form the 1967-2004 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