LONGMIRE RAINIER NPS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456894) RAINIER LONGMIRE
From Year=1909 To Year=1978
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 7 26 91 268 439 644 635 461 227 37 4 2840
40 S 2 8 34 126 394 833 1477 2111 2572 2799 2836 2840 2840
45 M 0 1 7 35 150 294 489 480 316 117 8 0 1896
45 S 0 1 8 43 192 486 975 1455 1770 1887 1896 1896 1896
50 M 0 0 1 10 70 168 336 327 188 48 1 0 1150
50 S 0 0 1 12 82 250 586 912 1101 1149 1150 1150 1150
55 M 0 0 0 2 25 79 196 187 93 15 0 0 598
55 S 0 0 0 3 28 107 302 490 583 598 598 598 598
60 M 0 0 0 0 7 29 90 82 35 3 0 0 247
60 S 0 0 0 0 7 36 126 209 244 247 247 247 247
Corn Growing Degree Days
50 M 1 5 22 69 171 252 387 375 268 124 14 1 1687
50 S 1 6 28 96 268 519 906 1281 1548 1672 1686 1687 1687
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