WHITE RIVER RS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459171) PARKWAY 6 S
From Year=1966 To Year=1975
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 2 6 29 214 400 629 620 382 139 12 0 2434
40 S 1 3 9 39 253 653 1282 1902 2283 2422 2433 2434 2434
45 M 0 0 0 6 104 261 474 465 247 69 1 0 1628
45 S 0 0 0 6 110 371 845 1311 1558 1627 1628 1628 1628
50 M 0 0 0 0 39 151 326 318 143 28 0 0 1005
50 S 0 0 0 0 39 190 516 834 977 1005 1005 1005 1005
55 M 0 0 0 0 14 76 195 191 69 9 0 0 555
55 S 0 0 0 0 14 90 285 476 545 555 555 555 555
60 M 0 0 0 0 3 28 95 93 24 1 0 0 244
60 S 0 0 0 0 3 31 126 219 243 244 244 244 244
Corn Growing Degree Days
50 M 0 2 5 26 147 246 388 386 231 87 3 0 1523
50 S 0 2 8 34 181 427 815 1201 1433 1520 1523 1523 1523
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