PARMA EXPERIMENT STN, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(106844) PARMA EXPERIMENT STN
From Year=1922 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 8 26 131 320 581 775 1038 976 657 337 61 14 4925
40 S 8 33 164 485 1066 1841 2879 3855 4512 4849 4910 4925 4925
45 M 1 5 50 191 428 625 883 821 508 199 18 4 3734
45 S 1 6 57 247 675 1301 2183 3004 3512 3712 3730 3734 3734
50 M 0 1 13 95 284 476 728 666 362 96 4 1 2724
50 S 0 1 14 109 393 868 1596 2262 2624 2720 2723 2724 2724
55 M 0 0 2 36 164 331 573 511 228 34 0 0 1879
55 S 0 0 2 38 202 532 1105 1617 1844 1878 1879 1879 1879
60 M 0 0 0 9 78 202 419 360 118 8 0 0 1194
60 S 0 0 0 9 87 289 708 1068 1186 1194 1194 1194 1194
Corn Growing Degree Days
50 M 3 21 112 233 375 482 627 592 444 264 49 7 3208
50 S 3 25 137 369 744 1226 1853 2445 2889 3152 3201 3208 3208
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