TILLAMOOK 1 W, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(358494) TILLAMOOK 1 W
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 133 149 180 241 373 477 571 592 523 386 220 143 3989
40 S 133 282 462 703 1076 1553 2124 2716 3239 3625 3845 3989 3989
45 M 50 57 66 108 220 327 416 437 373 235 102 51 2442
45 S 50 107 172 280 500 827 1243 1680 2053 2289 2391 2442 2442
50 M 9 13 13 29 91 180 261 282 226 108 29 9 1249
50 S 9 21 35 64 155 335 596 878 1103 1211 1240 1249 1249
55 M 0 1 1 5 23 61 116 134 98 31 3 0 474
55 S 0 2 3 8 31 92 208 342 440 471 474 474 474
60 M 0 0 0 1 4 10 24 31 24 6 0 0 99
60 S 0 0 0 1 5 15 39 69 93 99 99 99 99
Corn Growing Degree Days
50 M 35 54 73 108 175 235 300 321 293 201 84 37 1917
50 S 35 90 162 270 446 681 981 1302 1595 1796 1880 1917 1917
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 Jul 28, 2006
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