TONASKET 4 NNE, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458520) TONASKET 4 NNE
From Year=1984 To Year=2004
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 13 125 341 569 745 954 921 624 270 44 3 4612
40 S 3 16 142 482 1051 1796 2751 3671 4295 4565 4610 4612 4612
45 M 0 1 44 200 415 595 799 766 474 146 11 0 3450
45 S 0 1 45 245 659 1254 2054 2819 3293 3439 3450 3450 3450
50 M 0 0 9 91 267 445 644 611 327 62 2 0 2459
50 S 0 0 9 100 368 812 1457 2068 2395 2457 2459 2459 2459
55 M 0 0 1 27 142 298 489 456 192 19 0 0 1624
55 S 0 0 1 28 170 468 957 1413 1606 1624 1624 1624 1624
60 M 0 0 0 4 58 165 335 303 87 3 0 0 956
60 S 0 0 0 4 63 228 563 865 953 956 956 956 956
Corn Growing Degree Days
50 M 1 7 94 229 361 465 593 577 402 180 16 0 2923
50 S 1 7 101 330 691 1156 1749 2326 2727 2907 2923 2923 2923
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