EAST PARK RESERVOIR, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042640) EAST PARK RESERVOIR
From Year=1948 To Year=2003
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 132 197 298 437 688 909 1127 1072 896 649 319 150 6876
40 S 132 329 628 1064 1753 2662 3789 4861 5757 6406 6726 6876 6876
45 M 45 89 163 292 533 759 972 917 746 495 185 53 5249
45 S 45 134 297 589 1123 1882 2854 3771 4517 5012 5197 5249 5249
50 M 9 26 66 166 381 609 817 762 596 343 82 11 3867
50 S 9 35 100 266 647 1256 2073 2836 3432 3775 3856 3867 3867
55 M 1 4 17 74 242 460 662 608 447 205 25 2 2745
55 S 1 4 22 96 338 798 1460 2068 2514 2719 2744 2745 2745
60 M 0 0 2 22 131 317 507 453 302 98 4 0 1836
60 S 0 0 2 24 156 473 980 1433 1735 1832 1836 1836 1836
Corn Growing Degree Days
50 M 93 127 186 280 430 561 690 654 551 418 212 109 4310
50 S 93 220 406 686 1116 1677 2367 3021 3572 3990 4202 4310 4310
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 Jul 28, 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