FREDERICKSBURG NATL PK, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1893 To Year=1997
Station:(443192) FREDERICKSBURG NATL PK
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 66 75 229 462 773 983 1147 1089 872 548 248 85 6578
40 S 66 141 370 833 1605 2588 3735 4825 5697 6245 6493 6578 6578
45 M 30 34 135 323 618 833 992 934 722 398 146 40 5207
45 S 30 65 200 523 1141 1974 2966 3900 4623 5020 5167 5207 5207
50 M 12 14 72 204 464 683 837 779 572 260 76 16 3990
50 S 12 26 98 302 766 1449 2286 3065 3638 3898 3974 3990 3990
55 M 4 5 34 115 317 533 682 624 425 148 33 5 2925
55 S 4 9 43 158 475 1008 1690 2315 2739 2888 2920 2925 2925
60 M 1 1 14 55 190 385 527 470 286 70 11 1 2011
60 S 1 2 17 71 261 646 1173 1643 1929 1999 2010 2011 2011
Corn Growing Degree Days
50 M 46 56 156 294 490 654 779 737 570 345 162 56 4345
50 S 46 102 258 552 1042 1696 2474 3211 3781 4127 4289 4345 4345
Derived form the 1893-1997 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