ASTORIA RGNL AP, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(350328) ASTORIA WSO AIRPORT
From Year=1953 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 123 135 176 245 392 507 627 645 555 394 216 127 4141
40 S 123 258 434 679 1070 1577 2204 2849 3404 3798 4014 4141 4141
45 M 39 46 59 106 237 357 472 490 405 241 97 41 2589
45 S 39 85 144 250 486 843 1315 1805 2210 2452 2548 2589 2589
50 M 5 8 10 27 97 207 317 335 256 108 26 6 1402
50 S 5 13 23 50 148 355 671 1006 1262 1370 1396 1402 1402
55 M 0 1 1 5 24 72 162 180 116 29 3 0 592
55 S 0 1 1 6 30 101 264 444 560 589 592 592 592
60 M 0 0 0 1 5 11 37 48 29 4 0 0 135
60 S 0 0 0 1 5 17 54 102 131 135 135 135 135
Corn Growing Degree Days
50 M 23 37 56 89 164 232 325 344 290 179 68 25 1832
50 S 23 60 116 206 369 601 926 1270 1560 1739 1807 1832 1832
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