DAVENPORT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452007) DAVENPORT
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 2 4 48 184 413 589 829 808 537 222 22 3 3662
40 S 2 6 54 239 652 1241 2070 2878 3415 3637 3659 3662 3662
45 M 0 1 12 89 268 439 674 653 390 114 3 0 2644
45 S 0 1 13 102 370 809 1483 2137 2527 2640 2644 2644 2644
50 M 0 0 2 34 150 295 519 499 254 47 0 0 1799
50 S 0 0 2 36 186 480 1000 1498 1752 1799 1799 1799 1799
55 M 0 0 0 10 69 170 367 347 141 14 0 0 1120
55 S 0 0 0 10 80 250 617 964 1105 1120 1120 1120 1120
60 M 0 0 0 2 25 81 227 209 63 3 0 0 610
60 S 0 0 0 2 27 108 335 545 607 610 610 610 610
Corn Growing Degree Days
50 M 1 2 33 129 268 370 526 516 353 154 8 0 2361
50 S 1 3 36 166 433 803 1329 1845 2198 2352 2360 2361 2361
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