WEED FIRE DEPT, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049499) WEED FIRE DEPT
From Year=1957 To Year=1989
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 16 36 81 177 386 603 810 786 549 310 72 20 3848
40 S 16 52 134 311 697 1300 2110 2896 3445 3755 3827 3848 3848
45 M 3 9 27 89 248 454 655 631 400 183 24 4 2727
45 S 3 12 39 128 376 830 1485 2116 2517 2700 2723 2727 2727
50 M 0 1 7 36 138 312 500 477 263 89 4 0 1828
50 S 0 2 8 44 182 494 994 1471 1734 1823 1828 1828 1828
55 M 0 0 1 11 65 189 349 327 148 34 0 0 1124
55 S 0 0 1 12 77 266 615 942 1090 1124 1124 1124 1124
60 M 0 0 0 2 24 95 210 191 63 8 0 0 592
60 S 0 0 0 2 26 121 331 522 585 592 592 592 592
Corn Growing Degree Days
50 M 9 29 71 140 271 397 525 512 389 238 49 9 2638
50 S 9 38 109 249 520 917 1441 1954 2342 2580 2629 2638 2638
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 Apr 5, 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