TUTKA BAY LAGOON, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(509460) TUTKA BAY LAGOON
From Year=1979 To Year=2003
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 0 0 0 6 133 342 487 452 222 29 2 0 1673
40 S 0 0 0 7 140 481 968 1420 1642 1671 1673 1673 1673
45 M 0 0 0 0 39 194 332 297 95 5 0 0 962
45 S 0 0 0 0 40 234 566 862 958 962 962 962 962
50 M 0 0 0 0 5 71 178 146 19 0 0 0 419
50 S 0 0 0 0 5 76 254 400 419 419 419 419 419
55 M 0 0 0 0 0 14 49 42 2 0 0 0 106
55 S 0 0 0 0 0 14 63 104 106 106 106 106 106
60 M 0 0 0 0 0 1 5 6 0 0 0 0 12
60 S 0 0 0 0 0 1 6 12 12 12 12 12 12
Corn Growing Degree Days
50 M 0 0 0 4 74 175 239 223 73 2 0 0 790
50 S 0 0 0 4 77 253 492 715 788 790 790 790 790
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