NEWPORT NEWS PRESS BLDG, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1898 To Year=1980
Station:(446054) NEWPORT NEWS PRESS BLDG
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 132 124 299 548 841 1051 1215 1193 985 701 364 165 7617
40 S 132 256 555 1102 1943 2993 4208 5401 6386 7087 7451 7617 7617
45 M 66 61 182 402 686 901 1060 1038 835 547 234 85 6096
45 S 66 127 310 712 1397 2298 3357 4395 5230 5778 6011 6096 6096
50 M 28 25 97 268 531 751 905 883 685 396 130 36 4733
50 S 28 53 150 418 949 1699 2604 3487 4172 4568 4698 4733 4733
55 M 9 8 45 158 379 601 750 728 535 256 60 10 3538
55 S 9 17 61 220 598 1199 1949 2676 3212 3467 3528 3538 3538
60 M 2 2 17 79 239 451 595 573 387 141 21 2 2509
60 S 2 4 21 100 339 790 1385 1958 2345 2486 2507 2509 2509
Corn Growing Degree Days
50 M 67 64 160 312 533 720 852 838 672 420 188 77 4903
50 S 67 131 291 603 1136 1856 2708 3546 4218 4638 4826 4903 4903
Derived form the 1898-1980 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