HAPPY JACK RS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(023828) HAPPY JACK RANGER STN
From Year=1969 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 24 32 104 286 549 748 692 485 201 33 3 3158
40 S 2 27 59 162 448 997 1745 2436 2921 3122 3155 3158 3158
45 M 0 11 5 36 157 400 593 537 336 91 5 0 2171
45 S 0 11 16 52 209 609 1202 1739 2075 2166 2171 2171 2171
50 M 0 3 0 8 62 256 438 382 195 26 0 0 1371
50 S 0 3 4 12 74 331 768 1150 1345 1371 1371 1371 1371
55 M 0 1 0 0 15 131 283 228 79 3 0 0 741
55 S 0 1 1 1 16 148 431 659 738 741 741 741 741
60 M 0 0 0 0 2 49 136 92 17 0 0 0 295
60 S 0 0 0 0 2 51 186 278 294 295 295 295 295
Corn Growing Degree Days
50 M 10 27 46 109 228 386 470 425 316 167 51 12 2247
50 S 10 37 83 191 419 805 1276 1701 2017 2184 2235 2247 2247
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