BOISE 7 N, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(101017) BOISE 7 N
From Year=1973 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 9 26 107 233 456 694 1009 981 684 344 74 16 4635
40 S 9 35 142 376 832 1526 2536 3517 4201 4546 4620 4635 4635
45 M 1 5 41 130 313 544 854 826 535 216 29 4 3500
45 S 1 7 48 178 491 1035 1889 2716 3251 3467 3496 3500 3500
50 M 0 1 12 63 191 398 699 671 391 117 8 0 2551
50 S 0 1 13 75 267 665 1364 2035 2426 2543 2550 2551 2551
55 M 0 0 2 24 103 265 544 517 259 51 1 0 1767
55 S 0 0 2 27 129 394 938 1455 1714 1766 1767 1767 1767
60 M 0 0 0 8 47 154 393 367 149 18 0 0 1136
60 S 0 0 0 8 55 209 602 969 1118 1135 1136 1136 1136
Corn Growing Degree Days
50 M 2 9 55 138 279 434 642 628 426 196 32 4 2846
50 S 2 11 67 205 484 917 1560 2188 2614 2810 2842 2846 2846
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