THE DALLES, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(358407) THE DALLES
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 35 74 219 409 639 809 1033 1008 751 453 139 44 5612
40 S 35 109 328 737 1376 2185 3217 4225 4976 5429 5568 5612 5612
45 M 8 19 98 262 484 659 878 853 601 302 55 11 4228
45 S 8 27 125 387 870 1529 2407 3260 3861 4163 4217 4228 4228
50 M 1 3 29 135 331 509 723 698 451 167 14 2 3063
50 S 1 4 33 168 499 1008 1731 2429 2880 3047 3061 3063 3063
55 M 0 0 5 54 192 360 568 543 304 70 2 0 2099
55 S 0 0 6 59 252 611 1179 1722 2027 2097 2099 2099 2099
60 M 0 0 0 16 92 220 413 388 173 20 0 0 1324
60 S 0 0 0 16 108 328 741 1129 1303 1323 1324 1324 1324
Corn Growing Degree Days
50 M 13 36 126 242 379 496 653 634 466 272 62 15 3394
50 S 13 49 175 417 797 1293 1946 2580 3045 3318 3379 3394 3394
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