ELWHA RANGER STN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452548) ELWHA RANGER STN
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 20 32 91 215 395 520 677 696 540 282 80 28 3576
40 S 20 53 144 359 754 1274 1951 2647 3187 3468 3548 3576 3576
45 M 2 4 18 88 243 370 522 541 390 139 19 3 2340
45 S 2 6 24 112 355 725 1247 1787 2178 2317 2336 2340 2340
50 M 0 0 2 23 114 222 367 386 243 44 2 0 1402
50 S 0 0 2 25 138 361 728 1113 1356 1400 1401 1402 1402
55 M 0 0 0 4 39 99 216 233 112 7 0 0 709
55 S 0 0 0 4 43 142 358 590 702 709 709 709 709
60 M 0 0 0 0 10 34 95 102 32 0 0 0 272
60 S 0 0 0 0 10 43 138 240 272 272 272 272 272
Corn Growing Degree Days
50 M 2 7 37 109 211 279 389 401 288 113 14 3 1854
50 S 2 9 46 155 366 645 1034 1435 1724 1837 1851 1854 1854
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