JOHN DAY DAM, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454035) JOHN DAY DAM
From Year=1958 To Year=1972
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 52 97 215 386 627 849 1098 1084 807 496 179 50 5941
40 S 52 150 365 751 1378 2227 3325 4409 5216 5712 5891 5941 5941
45 M 13 26 96 238 472 699 943 929 657 343 73 10 4499
45 S 13 39 135 373 845 1544 2487 3416 4073 4416 4489 4499 4499
50 M 2 2 29 112 319 549 788 774 507 199 15 2 3298
50 S 2 5 33 145 464 1013 1801 2575 3082 3282 3297 3298 3298
55 M 0 0 5 40 184 400 633 619 358 92 2 0 2334
55 S 0 0 5 46 230 630 1263 1881 2240 2331 2333 2334 2334
60 M 0 0 0 11 91 256 479 464 218 33 0 0 1551
60 S 0 0 0 11 102 358 837 1300 1519 1551 1551 1551 1551
Corn Growing Degree Days
50 M 15 33 100 189 350 528 710 703 503 260 57 10 3456
50 S 15 47 147 336 685 1213 1923 2626 3130 3389 3447 3456 3456
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