MANSFIELD, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454971) MANSFIELD
From Year=1948 To Year=1986
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 2 6 47 218 334 638 872 786 447 172 10 0 3531
40 S 2 8 55 273 607 1244 2116 2902 3349 3521 3531 3531 3531
45 M 0 0 11 99 185 488 717 631 298 59 2 0 2489
45 S 0 0 11 110 295 783 1499 2130 2428 2487 2489 2489 2489
50 M 0 0 1 31 79 339 562 476 157 11 0 0 1655
50 S 0 0 1 31 110 450 1011 1487 1644 1655 1655 1655 1655
55 M 0 0 0 2 27 203 407 325 65 1 0 0 1029
55 S 0 0 0 2 29 232 638 964 1028 1029 1029 1029 1029
60 M 0 0 0 0 6 98 253 198 10 0 0 0 565
60 S 0 0 0 0 6 104 357 555 565 565 565 565 565
Corn Growing Degree Days
50 M 0 6 36 172 195 395 550 488 294 135 3 0 2271
50 S 0 6 41 213 407 803 1353 1841 2134 2269 2271 2271 2271
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