THE DALLES MUNI AP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451968) DALLESPORT FCWOS AP
From Year=1948 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 38 74 199 380 636 808 1039 1022 775 437 129 36 5572
40 S 38 111 310 690 1326 2134 3172 4194 4969 5406 5536 5572 5572
45 M 9 20 82 234 481 658 884 867 625 288 49 9 4205
45 S 9 30 112 346 827 1484 2368 3235 3860 4148 4197 4205 4205
50 M 1 4 21 114 328 508 729 712 475 157 11 2 3061
50 S 1 5 26 139 467 975 1704 2416 2891 3048 3059 3061 3061
55 M 0 0 3 41 190 358 574 557 328 66 2 0 2118
55 S 0 0 3 44 234 592 1165 1723 2051 2116 2118 2118 2118
60 M 0 0 0 11 90 218 419 402 191 20 0 0 1350
60 S 0 0 0 11 100 318 737 1139 1331 1350 1350 1350 1350
Corn Growing Degree Days
50 M 12 33 110 218 374 494 659 650 483 256 50 11 3349
50 S 12 44 154 372 747 1241 1899 2549 3032 3288 3338 3349 3349
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