SEQUIM, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457538) SEQUIM
From Year=1916 To Year=1980
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 42 63 111 228 393 521 637 650 529 324 122 60 3682
40 S 42 106 217 445 838 1358 1996 2646 3176 3500 3622 3682 3682
45 M 7 12 28 97 240 371 482 495 380 177 36 11 2336
45 S 7 19 47 143 384 754 1237 1732 2111 2289 2325 2336 2336
50 M 0 1 3 23 107 222 327 340 232 65 4 1 1326
50 S 0 1 4 28 134 356 684 1024 1256 1321 1325 1326 1326
55 M 0 0 0 3 31 91 176 187 101 12 0 0 601
55 S 0 0 0 3 34 125 301 488 589 601 601 601 601
60 M 0 0 0 0 6 23 61 61 26 1 0 0 178
60 S 0 0 0 0 6 29 90 151 177 178 178 178 178
Corn Growing Degree Days
50 M 8 18 45 106 200 270 354 365 282 148 38 13 1847
50 S 8 26 71 178 377 647 1001 1366 1648 1796 1834 1847 1847
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