METHOW 2 S, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455326) METHOW 2 S
From Year=1970 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 0 4 89 276 531 722 955 946 632 270 26 0 4451
40 S 0 5 93 369 900 1622 2577 3523 4155 4425 4451 4451 4451
45 M 0 0 24 149 377 572 800 791 482 146 6 0 3347
45 S 0 0 24 173 550 1122 1922 2713 3195 3341 3347 3347 3347
50 M 0 0 4 63 233 422 645 636 337 62 1 0 2403
50 S 0 0 4 67 300 722 1367 2003 2340 2402 2403 2403 2403
55 M 0 0 0 19 120 278 490 481 203 21 0 0 1613
55 S 0 0 0 19 139 416 907 1388 1592 1613 1613 1613 1613
60 M 0 0 0 4 49 153 339 330 101 5 0 0 981
60 S 0 0 0 4 53 206 545 875 976 981 981 981 981
Corn Growing Degree Days
50 M 0 5 78 204 344 454 590 584 418 210 17 0 2904
50 S 0 5 83 287 632 1086 1675 2260 2677 2887 2904 2904 2904
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