METHOW 2 S, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455326) METHOW 2 S
From Year=1970 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 0 4 87 276 532 718 961 944 639 269 27 0 4459
40 S 0 4 92 367 899 1617 2578 3522 4162 4431 4458 4459 4459
45 M 0 0 24 148 378 568 806 789 490 146 6 0 3354
45 S 0 0 24 172 550 1118 1924 2713 3203 3348 3354 3354 3354
50 M 0 0 4 63 234 419 651 634 343 61 1 0 2410
50 S 0 0 4 67 301 719 1370 2004 2348 2409 2410 2410 2410
55 M 0 0 0 19 121 274 496 479 209 21 0 0 1619
55 S 0 0 0 19 140 414 910 1389 1598 1619 1619 1619 1619
60 M 0 0 0 4 50 149 344 328 105 5 0 0 985
60 S 0 0 0 4 54 203 547 875 979 985 985 985 985
Corn Growing Degree Days
50 M 0 4 75 202 344 452 595 584 420 206 17 0 2901
50 S 0 5 80 281 626 1077 1673 2257 2678 2883 2900 2901 2901
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