RIDDLE 2 NNE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357169) RIDDLE 2 NNE
From Year=1899 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 103 158 251 353 530 689 884 873 691 468 224 104 5329
40 S 103 261 512 865 1395 2084 2968 3841 4532 5000 5224 5329 5329
45 M 31 62 123 210 376 539 729 718 541 316 106 35 3785
45 S 31 93 216 426 801 1340 2069 2787 3328 3644 3751 3785 3785
50 M 6 15 42 97 228 389 574 563 391 177 34 7 2525
50 S 6 20 63 160 388 777 1351 1914 2305 2483 2517 2525 2525
55 M 1 2 9 32 111 243 419 408 247 74 7 1 1555
55 S 1 3 11 44 154 398 817 1225 1472 1547 1554 1555 1555
60 M 0 0 1 7 42 120 266 255 123 20 1 0 834
60 S 0 0 1 7 49 168 435 690 813 834 834 834 834
Corn Growing Degree Days
50 M 36 79 145 214 321 419 552 545 439 285 93 31 3160
50 S 36 114 259 473 794 1213 1765 2310 2750 3035 3129 3160 3160
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