NESPELEM 2 S, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455832) NESPELEM 2 S
From Year=1931 To Year=1991
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 2 7 59 249 479 676 898 870 583 277 27 4 4132
40 S 2 9 68 317 796 1472 2370 3240 3823 4101 4127 4132 4132
45 M 0 1 15 128 328 526 743 715 434 151 4 1 3046
45 S 0 1 16 144 472 998 1741 2455 2890 3041 3045 3046 3046
50 M 0 0 2 51 193 376 588 560 292 62 1 0 2125
50 S 0 0 2 54 246 622 1210 1770 2062 2125 2125 2125 2125
55 M 0 0 0 14 92 234 434 406 168 17 0 0 1366
55 S 0 0 0 15 107 341 775 1181 1348 1366 1366 1366 1366
60 M 0 0 0 3 34 118 285 258 77 3 0 0 778
60 S 0 0 0 3 37 155 440 698 775 778 778 778 778
Corn Growing Degree Days
50 M 0 5 53 189 330 438 563 549 402 212 15 1 2758
50 S 0 5 58 247 577 1015 1578 2127 2529 2741 2756 2758 2758
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