LIVERMORE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(044997) LIVERMORE
From Year=1930 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 212 284 405 510 691 825 988 976 884 709 404 231 7119
40 S 212 496 901 1411 2101 2927 3915 4890 5774 6484 6888 7119 7119
45 M 94 152 253 360 536 675 833 821 734 554 257 108 5378
45 S 94 246 499 860 1395 2071 2904 3724 4458 5012 5270 5378 5378
50 M 28 57 122 216 381 525 678 666 584 400 130 34 3820
50 S 28 84 206 423 804 1329 2007 2673 3257 3657 3786 3820 3820
55 M 5 11 39 100 233 376 523 511 434 251 45 6 2531
55 S 5 16 54 154 387 762 1285 1796 2230 2480 2525 2531 2531
60 M 0 1 6 32 112 231 368 356 285 123 9 0 1524
60 S 0 1 7 39 152 383 751 1107 1392 1515 1524 1524 1524
Corn Growing Degree Days
50 M 110 157 235 310 416 498 598 593 539 440 244 123 4263
50 S 110 268 502 812 1228 1726 2324 2917 3456 3896 4140 4263 4263
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