PETERSONS RANCH, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451760) PETERSONS RANCH
From Year=1953 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 42 74 148 255 461 618 810 807 650 408 147 42 4462
40 S 42 117 265 519 980 1598 2408 3215 3865 4273 4420 4462 4462
45 M 6 19 58 134 309 468 655 652 500 257 54 5 3118
45 S 6 25 83 217 526 994 1649 2301 2801 3058 3113 3118 3118
50 M 0 2 16 59 180 320 500 497 352 131 12 0 2068
50 S 0 3 18 77 257 577 1077 1574 1925 2056 2068 2068 2068
55 M 0 0 2 20 92 188 347 343 214 52 1 0 1259
55 S 0 0 3 22 114 302 649 992 1206 1257 1259 1259 1259
60 M 0 0 0 4 39 96 208 203 110 14 0 0 675
60 S 0 0 0 4 44 139 348 551 660 675 675 675 675
Corn Growing Degree Days
50 M 6 24 66 126 242 344 488 487 371 189 37 4 2385
50 S 6 29 96 222 464 809 1296 1783 2154 2344 2381 2385 2385
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