LOGAN UT STATE UNIV, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(425186) LOGAN UTAH STATE UNIV
From Year=1893 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 3 9 69 237 485 727 1025 981 655 330 60 7 4589
40 S 3 11 80 317 802 1530 2555 3536 4191 4521 4581 4589 4589
45 M 0 1 26 135 341 578 870 826 508 204 20 1 3510
45 S 0 1 27 162 503 1081 1951 2777 3285 3488 3508 3510 3510
50 M 0 0 7 64 214 431 715 671 365 104 4 0 2576
50 S 0 0 7 71 285 717 1432 2103 2468 2572 2576 2576 2576
55 M 0 0 1 23 115 293 560 516 235 41 0 0 1785
55 S 0 0 1 24 139 432 992 1509 1744 1785 1785 1785 1785
60 M 0 0 0 6 48 174 407 364 125 10 0 0 1135
60 S 0 0 0 6 54 228 635 999 1124 1135 1135 1135 1135
Corn Growing Degree Days
50 M 1 4 42 143 287 451 671 644 409 196 33 3 2884
50 S 1 5 46 189 476 927 1598 2243 2651 2848 2881 2884 2884
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