CHELAN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454430) LAKESIDE
From Year=1891 To Year=1958
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 6 89 328 597 774 1030 998 676 345 48 5 4897
40 S 2 8 96 424 1021 1795 2825 3823 4499 4844 4892 4897 4897
45 M 0 0 26 189 442 624 875 843 526 204 9 1 3741
45 S 0 1 27 215 658 1282 2157 3000 3527 3731 3740 3741 3741
50 M 0 0 4 83 292 474 720 688 378 95 1 0 2736
50 S 0 0 4 88 379 854 1574 2262 2640 2735 2736 2736 2736
55 M 0 0 0 26 160 326 565 533 237 30 0 0 1877
55 S 0 0 0 26 186 512 1077 1610 1847 1877 1877 1877 1877
60 M 0 0 0 6 67 189 411 380 120 6 0 0 1178
60 S 0 0 0 6 73 262 673 1052 1172 1178 1178 1178 1178
Corn Growing Degree Days
50 M 1 2 45 182 345 475 670 648 403 179 14 2 2967
50 S 1 3 48 230 575 1050 1721 2369 2772 2951 2965 2967 2967
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