SPRAGUE, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457956) SPRAGUE
From Year=1948 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 4 15 71 215 466 667 888 850 566 247 39 5 4033
40 S 4 19 90 305 771 1438 2326 3176 3742 3989 4028 4033 4033
45 M 0 2 21 106 316 517 733 695 418 131 9 1 2951
45 S 0 3 24 130 446 963 1697 2392 2810 2941 2950 2951 2951
50 M 0 0 4 42 187 369 578 540 278 54 1 0 2054
50 S 0 0 4 46 232 602 1180 1721 1999 2053 2054 2054 2054
55 M 0 0 0 12 92 233 425 388 159 15 0 0 1324
55 S 0 0 0 12 105 337 762 1150 1309 1324 1324 1324 1324
60 M 0 0 0 3 36 126 278 246 73 2 0 0 763
60 S 0 0 0 3 39 164 442 688 761 763 763 763 763
Corn Growing Degree Days
50 M 1 8 51 155 308 425 556 535 383 186 20 1 2630
50 S 1 10 61 215 524 948 1504 2039 2422 2609 2629 2630 2630
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