CATHAY BULL RUN RANCH, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041588) CATHAY BULL RUN RANCH
From Year=1948 To Year=1977
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 145 226 316 429 693 938 1181 1146 956 688 341 163 7222
40 S 145 372 687 1116 1809 2747 3927 5074 6029 6717 7058 7222 7222
45 M 59 113 178 285 538 788 1026 991 806 534 206 70 5593
45 S 59 172 350 635 1173 1960 2986 3977 4783 5317 5522 5593 5593
50 M 15 41 78 162 386 638 871 836 656 383 100 21 4186
50 S 15 57 134 297 683 1320 2191 3028 3683 4066 4166 4186 4186
55 M 2 9 23 74 246 489 716 681 506 240 37 4 3027
55 S 2 12 35 109 355 843 1559 2241 2746 2987 3024 3027 3027
60 M 1 1 4 24 130 344 561 526 358 125 9 0 2082
60 S 1 1 5 29 159 503 1064 1590 1948 2073 2081 2082 2082
Corn Growing Degree Days
50 M 81 126 188 271 434 578 721 700 593 433 208 98 4430
50 S 81 206 394 665 1099 1677 2399 3099 3692 4124 4332 4430 4430
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