MERIDIAN 1 SSW, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(105841) MERIDIAN 1 SSW
From Year=1911 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 10 24 121 310 548 735 1010 941 634 354 74 18 4778
40 S 10 34 155 465 1012 1748 2757 3698 4332 4686 4760 4778 4778
45 M 2 5 47 182 395 586 855 786 484 218 24 6 3588
45 S 2 6 53 235 630 1216 2070 2856 3340 3558 3582 3588 3588
50 M 0 0 12 88 254 437 700 631 339 111 5 2 2578
50 S 0 1 13 100 354 791 1491 2121 2460 2571 2576 2578 2578
55 M 0 0 1 32 137 293 545 476 208 40 1 0 1734
55 S 0 0 1 33 170 463 1008 1484 1692 1733 1733 1734 1734
60 M 0 0 0 8 60 167 391 324 105 9 0 0 1065
60 S 0 0 0 8 68 235 626 950 1055 1065 1065 1065 1065
Corn Growing Degree Days
50 M 3 14 94 220 356 462 617 584 424 253 52 7 3088
50 S 3 18 112 332 688 1150 1767 2351 2776 3029 3080 3088 3088
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