VISTA 2 NNE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049378) VISTA 1 NE
From Year=1957 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 489 465 536 590 716 793 954 1000 933 819 611 487 8394
40 S 489 954 1490 2080 2796 3589 4543 5543 6477 7296 7908 8394 8394
45 M 335 324 381 440 561 643 799 845 783 664 461 333 6570
45 S 335 659 1040 1480 2041 2684 3483 4329 5112 5776 6238 6570 6570
50 M 190 188 229 291 406 493 644 690 633 509 312 187 4772
50 S 190 377 606 897 1303 1796 2440 3130 3764 4273 4585 4772 4772
55 M 80 78 97 153 252 343 489 535 483 354 171 74 3111
55 S 80 158 255 409 660 1004 1493 2028 2512 2866 3037 3111 3111
60 M 25 23 26 55 112 196 334 380 333 203 65 18 1772
60 S 25 48 74 129 242 437 772 1152 1485 1688 1754 1772 1772
Corn Growing Degree Days
50 M 277 260 291 331 413 490 634 673 610 503 353 276 5111
50 S 277 536 827 1158 1571 2061 2695 3368 3978 4482 4835 5111 5111
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 Oct 31, 2012
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