ALDER DAM CAMP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(450094) ALDER DAM CAMP
From Year=1917 To Year=1954
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 36 47 102 222 380 503 660 652 506 312 106 52 3576
40 S 36 83 184 406 785 1288 1948 2600 3106 3417 3524 3576 3576
45 M 7 11 31 105 229 353 505 497 356 173 34 12 2313
45 S 7 18 49 154 383 736 1241 1737 2094 2267 2301 2313 2313
50 M 0 1 6 36 108 206 350 342 213 69 7 1 1340
50 S 0 2 8 44 152 357 708 1050 1262 1332 1339 1340 1340
55 M 0 0 1 7 39 85 199 190 96 18 1 0 636
55 S 0 0 1 8 46 131 330 520 616 635 636 636 636
60 M 0 0 0 1 9 24 79 70 28 3 0 0 213
60 S 0 0 0 1 10 34 112 182 210 213 213 213 213
Corn Growing Degree Days
50 M 9 23 64 140 230 291 408 404 301 165 39 11 2083
50 S 9 31 95 235 465 756 1163 1567 1868 2033 2072 2083 2083
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