LOUISA, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1916 To Year=2012
Station:(445050) LOUISA
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 74 83 235 471 744 959 1111 1070 841 520 241 91 6441
40 S 74 157 392 864 1608 2567 3677 4748 5589 6109 6350 6441 6441
45 M 36 40 140 331 589 809 956 915 691 371 143 45 5066
45 S 36 75 215 547 1136 1945 2901 3816 4507 4878 5021 5066 5066
50 M 15 16 76 211 436 659 801 760 542 238 75 19 3847
50 S 15 31 107 318 754 1413 2214 2974 3516 3754 3828 3847 3847
55 M 5 5 36 120 292 509 646 605 395 132 32 6 2784
55 S 5 11 47 167 460 969 1615 2220 2615 2746 2778 2784 2784
60 M 1 1 14 58 170 362 491 451 258 60 10 1 1879
60 S 1 2 17 75 246 607 1098 1549 1807 1867 1877 1879 1879
Corn Growing Degree Days
50 M 50 62 164 309 476 638 754 725 550 332 156 57 4273
50 S 50 111 275 584 1061 1698 2452 3177 3727 4059 4216 4273 4273
Derived form the 1916-2012 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