SPRAGUE, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457956) SPRAGUE
From Year=1899 To Year=1982
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 3 13 79 232 477 663 903 853 579 272 42 7 4124
40 S 3 17 96 328 805 1468 2371 3224 3803 4075 4117 4124 4124
45 M 0 2 25 119 327 513 748 698 431 151 9 1 3024
45 S 0 2 27 146 472 986 1733 2431 2863 3014 3023 3024 3024
50 M 0 0 5 48 195 365 593 543 290 67 1 0 2108
50 S 0 0 5 53 248 613 1206 1750 2040 2107 2108 2108 2108
55 M 0 0 0 14 98 227 439 390 168 22 0 0 1359
55 S 0 0 0 15 112 340 778 1168 1336 1359 1359 1359 1359
60 M 0 0 0 3 40 120 290 246 79 5 0 0 783
60 S 0 0 0 3 43 162 452 699 777 783 783 783 783
Corn Growing Degree Days
50 M 1 7 58 166 316 421 563 537 390 197 22 2 2679
50 S 1 9 67 232 548 969 1531 2068 2458 2655 2677 2679 2679
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