DAVENPORT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452007) DAVENPORT
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 1 6 43 172 406 592 821 811 543 211 23 2 3632
40 S 1 7 50 222 629 1221 2042 2853 3396 3607 3630 3632 3632
45 M 0 1 10 80 264 443 666 656 396 106 4 0 2625
45 S 0 1 11 90 354 796 1463 2119 2515 2621 2625 2625 2625
50 M 0 0 1 30 147 299 512 501 259 43 0 0 1792
50 S 0 0 1 31 178 476 988 1489 1748 1791 1792 1792 1792
55 M 0 0 0 8 68 176 360 350 146 13 0 0 1122
55 S 0 0 0 8 76 252 613 963 1108 1122 1122 1122 1122
60 M 0 0 0 2 25 85 222 213 66 2 0 0 615
60 S 0 0 0 2 26 112 334 547 613 615 615 615 615
Corn Growing Degree Days
50 M 0 2 29 119 258 371 518 513 356 149 8 0 2323
50 S 0 3 31 150 408 779 1297 1810 2166 2315 2322 2323 2323
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