RICHLAND, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457015) RICHLAND
From Year=1948 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 44 80 217 413 673 861 1083 1055 769 434 135 47 5812
40 S 44 125 342 755 1428 2289 3372 4427 5195 5630 5765 5812 5812
45 M 13 27 98 266 518 711 928 900 619 286 57 14 4436
45 S 13 40 138 404 922 1633 2561 3461 4079 4365 4422 4436 4436
50 M 2 6 29 137 364 561 773 745 469 156 17 2 3262
50 S 2 9 38 175 539 1100 1873 2617 3087 3243 3259 3262 3262
55 M 0 1 5 54 222 411 618 590 323 66 3 0 2294
55 S 0 1 6 60 282 694 1312 1901 2224 2291 2294 2294 2294
60 M 0 0 1 15 111 267 463 435 190 20 0 0 1503
60 S 0 0 1 16 127 394 857 1292 1482 1502 1503 1503 1503
Corn Growing Degree Days
50 M 18 43 133 251 406 536 682 667 481 267 63 18 3564
50 S 18 61 194 445 851 1387 2069 2736 3216 3484 3546 3564 3564
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