MORMON LAKE RS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(025708) MORMON LAKE RNGR STN
From Year=1916 To Year=1968
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M -99 2 33 157 340 586 789 716 520 243 28 4 -99
40 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
45 M -99 0 2 71 201 437 634 561 372 120 4 0 -99
45 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
50 M -99 0 0 24 89 290 479 406 228 39 0 0 -99
50 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
55 M -99 0 0 4 24 161 324 251 103 6 0 0 -99
55 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
60 M -99 0 0 0 3 64 172 106 23 0 0 0 -99
60 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
Corn Growing Degree Days
50 M -99 3 53 142 252 398 496 437 333 194 40 18 -99
50 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
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