QUINCY, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047195) QUINCY
From Year=1895 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 17 51 130 249 469 656 830 775 582 359 104 23 4244
40 S 17 68 199 448 916 1572 2402 3177 3758 4117 4220 4244 4244
45 M 2 12 47 131 319 506 675 620 432 216 35 5 2999
45 S 2 14 61 192 511 1017 1692 2312 2744 2960 2995 2999 2999
50 M 0 1 9 50 187 358 520 465 287 102 7 1 1986
50 S 0 1 11 61 247 605 1125 1590 1877 1979 1986 1986 1986
55 M 0 0 1 11 87 219 365 311 159 33 1 0 1187
55 S 0 0 1 12 98 318 683 995 1153 1186 1187 1187 1187
60 M 0 0 0 1 29 107 217 169 64 7 0 0 595
60 S 0 0 0 1 30 137 354 523 588 595 595 595 595
Corn Growing Degree Days
50 M 21 58 130 212 348 450 549 538 453 325 102 23 3208
50 S 21 79 209 421 769 1219 1768 2306 2759 3083 3186 3208 3208
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