MAMMOTH LAKES RANGER STN, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(045280) MAMMOTH LAKES RANGER STN
From Year=1993 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 2 1 18 66 238 455 692 649 431 180 38 7 2776
40 S 2 2 21 86 324 779 1472 2121 2552 2732 2769 2776 2776
45 M 0 0 2 20 129 313 537 494 289 78 7 1 1872
45 S 0 0 2 22 151 464 1001 1495 1785 1863 1871 1872 1872
50 M 0 0 0 3 52 186 383 341 161 22 1 0 1148
50 S 0 0 0 3 55 241 624 965 1125 1147 1148 1148 1148
55 M 0 0 0 0 13 84 230 192 59 3 0 0 581
55 S 0 0 0 0 13 97 327 519 578 581 581 581 581
60 M 0 0 0 0 2 21 99 70 11 0 0 0 203
60 S 0 0 0 0 2 23 123 192 203 203 203 203 203
Corn Growing Degree Days
50 M 9 5 28 62 174 301 449 426 314 175 52 12 2008
50 S 9 14 41 104 278 579 1028 1454 1768 1944 1995 2008 2008
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