HARPER 1 S, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(353666) HARPER 1 S
From Year=1919 To Year=1975
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 5 13 92 266 531 738 997 914 576 277 42 12 4462
40 S 5 18 110 376 907 1645 2642 3556 4132 4409 4451 4462 4462
45 M 1 2 30 144 379 588 842 759 427 152 10 3 3339
45 S 1 3 34 178 557 1145 1987 2746 3174 3326 3336 3339 3339
50 M 0 0 6 61 239 439 687 604 286 63 1 1 2388
50 S 0 0 6 67 307 745 1433 2037 2323 2386 2387 2388 2388
55 M 0 0 1 17 124 294 532 450 163 18 0 0 1599
55 S 0 0 1 18 142 436 969 1418 1581 1599 1599 1599 1599
60 M 0 0 0 3 50 166 379 300 70 3 0 0 971
60 S 0 0 0 3 53 219 598 898 968 971 971 971 971
Corn Growing Degree Days
50 M 3 15 99 226 375 469 606 572 424 251 47 6 3093
50 S 3 18 117 343 717 1187 1793 2365 2789 3040 3087 3093 3093
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