NAMPA 2 NW, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(106300) NAMPA 2 NW
From Year=1946 To Year=1960
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 17 31 108 325 581 733 1018 955 663 351 62 15 4861
40 S 17 49 156 482 1063 1796 2814 3770 4433 4784 4846 4861 4861
45 M 5 8 39 195 428 583 863 800 513 212 18 3 3667
45 S 5 13 51 246 674 1257 2120 2921 3434 3646 3664 3667 3667
50 M 1 1 10 100 284 434 708 645 367 109 3 0 2663
50 S 1 2 12 111 396 830 1538 2183 2551 2660 2663 2663 2663
55 M 0 0 2 39 165 291 554 491 233 41 0 0 1815
55 S 0 0 2 41 206 497 1050 1541 1773 1815 1815 1815 1815
60 M 0 0 0 10 78 166 400 339 122 9 0 0 1124
60 S 0 0 0 10 89 254 655 994 1115 1124 1124 1124 1124
Corn Growing Degree Days
50 M 8 21 81 229 365 453 625 588 438 252 48 7 3115
50 S 8 29 110 339 704 1157 1782 2370 2809 3061 3108 3115 3115
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