FORKS 1 E, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452914) FORKS 1 E
From Year=1931 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 71 83 126 223 389 502 636 655 546 356 145 76 3807
40 S 71 154 280 503 892 1394 2030 2685 3230 3587 3732 3807 3807
45 M 17 21 38 98 236 352 481 500 396 208 51 19 2416
45 S 17 37 75 173 409 761 1243 1742 2138 2346 2397 2416 2416
50 M 2 2 6 31 107 203 326 345 247 87 9 2 1369
50 S 2 4 11 41 149 352 679 1023 1271 1358 1367 1369 1369
55 M 0 0 0 7 35 81 175 191 116 23 1 0 628
55 S 0 0 0 7 42 123 298 490 605 628 628 628 628
60 M 0 0 0 1 9 23 61 68 34 3 0 0 199
60 S 0 0 0 1 9 33 94 161 196 199 199 199 199
Corn Growing Degree Days
50 M 10 26 53 111 201 259 352 370 304 168 39 10 1903
50 S 10 36 90 201 402 660 1012 1382 1686 1854 1893 1903 1903
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