WASHINGTON NATL WSCMO A, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1948 To Year=2012
Station:(448906) WASHINGTON NATL WSCMO A
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 63 80 236 503 807 1048 1222 1174 928 604 291 98 7054
40 S 63 144 379 883 1690 2738 3960 5133 6061 6665 6956 7054 7054
45 M 27 36 135 359 652 898 1067 1019 778 451 175 42 5638
45 S 27 63 198 556 1209 2106 3173 4192 4969 5421 5596 5638 5638
50 M 10 14 69 230 497 748 912 864 628 304 92 15 4382
50 S 10 24 92 322 819 1567 2479 3343 3970 4275 4366 4382 4382
55 M 3 4 29 128 347 598 757 709 478 179 39 5 3275
55 S 3 7 37 165 511 1109 1866 2574 3053 3232 3270 3275 3275
60 M 1 1 10 62 212 448 602 554 333 88 12 1 2323
60 S 1 1 12 73 285 733 1335 1889 2222 2309 2322 2323 2323
Corn Growing Degree Days
50 M 32 43 124 278 501 718 856 824 617 342 143 43 4520
50 S 32 74 198 476 978 1696 2552 3375 3992 4334 4477 4520 4520
Derived form the 1948-2012 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