VALYERMO FIRE STN 2, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049251) VALYERMO RANGER STN
From Year=1915 To Year=1971
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 117 159 248 435 626 830 1081 1054 848 573 267 145 6384
40 S 117 276 524 960 1586 2416 3497 4551 5399 5972 6240 6384 6384
45 M 42 69 129 294 472 680 926 899 698 421 144 57 4830
45 S 42 111 239 534 1006 1686 2612 3512 4209 4630 4774 4830 4830
50 M 8 18 47 171 323 530 771 744 548 275 57 14 3508
50 S 8 27 74 245 568 1098 1869 2613 3161 3436 3493 3508 3508
55 M 0 2 10 78 190 382 616 589 399 149 14 2 2431
55 S 0 2 12 90 279 661 1278 1867 2266 2415 2429 2431 2431
60 M 0 0 1 24 87 243 461 435 257 57 2 0 1567
60 S 0 0 1 25 112 355 816 1251 1509 1566 1567 1567 1567
Corn Growing Degree Days
50 M 115 144 213 334 443 531 646 638 549 412 228 134 4387
50 S 115 259 472 806 1249 1780 2426 3064 3612 4025 4253 4387 4387
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