NEWHALEM, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455840) NEWHALEM
From Year=1959 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 13 31 104 245 453 595 765 779 593 318 80 15 3992
40 S 13 45 149 395 848 1443 2208 2987 3579 3898 3978 3992 3992
45 M 1 3 31 124 301 445 610 624 443 177 20 1 2780
45 S 1 4 35 159 460 905 1516 2139 2582 2759 2779 2780 2780
50 M 0 0 5 51 171 297 455 469 295 74 2 0 1819
50 S 0 0 5 56 227 524 979 1448 1743 1817 1819 1819 1819
55 M 0 0 0 16 82 166 304 315 165 22 0 0 1072
55 S 0 0 0 16 99 265 569 884 1049 1071 1072 1072 1072
60 M 0 0 0 3 32 78 171 177 74 3 0 0 538
60 S 0 0 0 3 35 113 283 461 535 538 538 538 538
Corn Growing Degree Days
50 M 1 6 45 122 232 318 449 461 321 124 12 1 2091
50 S 1 7 52 174 406 724 1172 1633 1954 2078 2091 2091 2091
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