CHICO EXPERIMENT STN, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041715) CHICO EXPERIMENT STN
From Year=1906 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 167 269 411 561 801 991 1190 1128 956 707 376 180 7736
40 S 167 435 847 1408 2209 3200 4389 5518 6473 7180 7556 7736 7736
45 M 65 141 260 411 646 841 1035 973 806 552 232 73 6035
45 S 65 206 466 877 1523 2364 3399 4372 5178 5730 5962 6035 6035
50 M 15 51 132 267 491 691 880 818 656 398 112 18 4528
50 S 15 66 197 465 956 1647 2526 3345 4000 4399 4510 4528 4528
55 M 2 9 47 144 339 541 725 663 506 251 36 3 3265
55 S 2 10 57 201 540 1081 1806 2469 2975 3226 3262 3265 3265
60 M 0 1 10 57 202 392 570 508 357 125 7 0 2228
60 S 0 1 10 67 269 661 1231 1739 2096 2221 2228 2228 2228
Corn Growing Degree Days
50 M 81 149 245 347 495 607 714 676 584 446 229 93 4665
50 S 81 230 474 821 1316 1923 2637 3313 3897 4343 4572 4665 4665
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