RALEIGH 4 SW, NORTH CAROLINA

Period of Record General Climate Summary - Growing Degree Days

From Year=1892 To Year=2010
Station:(317074) RALEIGH 4 SW
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 155 171 375 602 881 1066 1195 1165 966 666 366 183 7792
40 S 155 326 701 1303 2184 3250 4445 5610 6576 7243 7609 7792 7792
45 M 84 96 248 456 726 916 1040 1010 816 513 240 101 6246
45 S 84 180 429 884 1610 2526 3566 4576 5392 5905 6145 6246 6246
50 M 40 47 148 318 571 766 885 855 666 364 140 49 4848
50 S 40 87 234 552 1123 1889 2774 3629 4295 4659 4799 4848 4848
55 M 16 18 76 199 418 616 730 700 517 231 69 19 3607
55 S 16 34 110 308 727 1342 2072 2772 3289 3520 3588 3607 3607
60 M 4 5 32 107 275 466 575 545 370 123 26 5 2534
60 S 4 9 41 149 424 890 1465 2010 2380 2503 2529 2534 2534
Corn Growing Degree Days
50 M 86 100 223 368 572 730 831 811 652 407 209 100 5088
50 S 86 187 410 778 1349 2079 2910 3721 4373 4779 4988 5088 5088
Derived form the 1892-2010 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