TOLT SOUTH FORK RESER, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458508) TOLT SOUTH FORK RESER
From Year=1962 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 15 217 59 64 267 449 682 728 439 308 -99 35 -99
40 S 15 231 290 354 622 1071 1753 2481 2920 3228 -99 -99 -99
45 M 0 165 11 23 147 300 527 573 295 180 -99 4 -99
45 S 0 165 176 199 346 646 1173 1746 2042 2222 -99 -99 -99
50 M 0 151 2 3 66 172 373 419 167 88 -99 0 -99
50 S 0 151 153 156 222 394 766 1185 1352 1440 -99 -99 -99
55 M 0 150 0 0 21 86 236 276 82 39 -99 0 -99
55 S 0 150 150 150 171 256 492 767 849 888 -99 -99 -99
60 M 0 148 0 0 5 33 134 155 37 15 -99 0 -99
60 S 0 148 148 148 153 186 320 475 512 527 -99 -99 -99
Corn Growing Degree Days
50 M 3 182 21 31 142 225 422 423 210 133 -99 2 -99
50 S 3 185 205 236 378 603 1025 1448 1658 1791 -99 -99 -99
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