NORTHPORT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455946) NORTHPORT
From Year=1899 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 1 3 62 267 524 697 911 862 578 236 26 1 4167
40 S 1 3 65 332 856 1553 2463 3325 3904 4140 4166 4167 4167
45 M 0 0 13 140 370 547 756 707 429 118 4 0 3085
45 S 0 0 13 154 524 1070 1826 2533 2962 3080 3085 3085 3085
50 M 0 0 1 56 226 397 601 552 286 44 0 0 2163
50 S 0 0 1 57 283 681 1281 1833 2119 2163 2163 2163 2163
55 M 0 0 0 16 112 253 446 398 161 10 0 0 1398
55 S 0 0 0 16 129 381 828 1226 1388 1398 1398 1398 1398
60 M 0 0 0 3 42 129 295 253 72 1 0 0 795
60 S 0 0 0 3 46 174 469 722 794 795 795 795 795
Corn Growing Degree Days
50 M 0 1 55 201 349 437 556 532 383 154 7 0 2676
50 S 0 2 57 257 606 1043 1599 2131 2515 2668 2676 2676 2676
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