ROCKY MOUNT, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1894 To Year=2012
Station:(447338) ROCKY MOUNT
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 76 84 236 464 742 943 1091 1049 831 522 241 96 6376
40 S 76 160 396 860 1602 2545 3636 4685 5517 6039 6279 6376 6376
45 M 33 36 137 324 587 793 936 894 681 373 137 44 4977
45 S 33 70 207 531 1118 1911 2847 3741 4422 4796 4932 4977 4977
50 M 13 12 69 203 434 643 781 739 532 238 65 17 3746
50 S 13 25 94 297 731 1374 2155 2894 3426 3664 3730 3746 3746
55 M 4 3 30 111 292 494 626 584 385 129 25 4 2686
55 S 4 7 37 148 439 933 1559 2143 2528 2657 2682 2686 2686
60 M 1 0 11 51 169 347 471 430 247 55 7 1 1788
60 S 1 1 12 63 231 578 1049 1478 1726 1781 1787 1788 1788
Corn Growing Degree Days
50 M 48 61 156 292 471 625 741 710 538 325 157 60 4184
50 S 48 109 265 557 1027 1653 2394 3105 3642 3967 4124 4184 4184
Derived form the 1894-2012 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