TANGIER ISLAND, VIRGINIA

Period of Record General Climate Summary - Growing Degree Days

From Year=1952 To Year=2001
Station:(448323) TANGIER ISLAND
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 60 70 207 481 790 1014 1207 1170 976 676 347 142 7140
40 S 60 130 337 817 1607 2621 3829 4999 5975 6651 6998 7140 7140
45 M 20 23 99 334 635 864 1052 1015 826 521 215 65 5670
45 S 20 43 142 476 1111 1975 3027 4043 4869 5390 5605 5670 5670
50 M 5 5 36 201 480 714 897 860 676 369 110 26 4380
50 S 5 10 46 247 727 1441 2339 3199 3875 4244 4354 4380 4380
55 M 1 0 11 100 328 564 742 705 526 227 43 8 3257
55 S 1 1 12 112 440 1004 1747 2452 2978 3205 3248 3257 3257
60 M 0 0 2 38 190 415 587 550 377 113 11 1 2284
60 S 0 0 2 40 230 645 1232 1783 2159 2272 2283 2284 2284
Corn Growing Degree Days
50 M 20 26 90 250 485 703 862 837 671 388 158 54 4544
50 S 20 46 135 385 871 1574 2436 3273 3944 4332 4490 4544 4544
Derived form the 1952-2001 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