STOCKTON WSO, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048558) STOCKTON WSO
From Year=1948 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 184 298 443 584 816 980 1157 1123 979 754 399 191 7907
40 S 184 482 925 1508 2324 3304 4461 5584 6563 7317 7716 7907 7907
45 M 78 165 289 434 661 830 1002 968 829 599 253 81 6189
45 S 78 244 533 966 1627 2457 3459 4427 5256 5855 6108 6189 6189
50 M 23 64 149 287 506 680 847 813 679 445 129 24 4645
50 S 23 87 237 524 1029 1709 2557 3370 4048 4493 4621 4645 4645
55 M 5 13 52 156 352 530 692 658 529 293 44 4 3329
55 S 5 18 70 227 579 1109 1801 2459 2988 3280 3325 3329 3329
60 M 0 1 9 63 210 381 537 503 379 156 8 0 2248
60 S 0 1 11 74 283 664 1201 1704 2083 2240 2248 2248 2248
Corn Growing Degree Days
50 M 74 153 250 348 496 608 714 700 616 463 220 82 4725
50 S 74 227 477 826 1321 1930 2644 3344 3960 4423 4643 4725 4725
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 Apr 5, 2006
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu