SPRAGUE RIVER, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(358007) SPRAGUE RIVER
From Year=1953 To Year=2001
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 3 13 35 115 296 491 714 674 439 196 35 5 3015
40 S 3 16 51 166 461 952 1667 2341 2779 2975 3010 3015 3015
45 M 0 2 8 44 172 346 559 519 296 92 8 0 2047
45 S 0 2 9 54 226 572 1131 1650 1946 2039 2046 2047 2047
50 M 0 0 0 11 82 214 407 367 172 31 1 0 1284
50 S 0 0 0 11 94 307 714 1080 1252 1283 1284 1284 1284
55 M 0 0 0 2 30 110 262 224 76 7 0 0 709
55 S 0 0 0 2 31 141 403 627 702 709 709 709 709
60 M 0 0 0 0 6 43 136 107 21 0 0 0 314
60 S 0 0 0 0 6 50 186 292 313 314 314 314 314
Corn Growing Degree Days
50 M 2 17 53 134 262 372 504 494 394 238 44 4 2519
50 S 2 20 73 207 469 841 1345 1839 2233 2471 2516 2519 2519
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