CALLAHAN, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041316) CALLAHAN
From Year=1943 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 27 55 130 241 457 657 889 847 634 362 91 28 4419
40 S 27 82 212 454 911 1568 2458 3305 3939 4301 4392 4419 4419
45 M 6 12 45 127 309 508 734 692 484 222 30 6 3176
45 S 6 18 63 191 499 1007 1741 2433 2918 3139 3170 3176 3176
50 M 0 1 8 51 179 360 579 537 337 108 6 1 2169
50 S 0 2 10 61 240 601 1180 1717 2054 2162 2168 2169 2169
55 M 0 0 0 13 84 224 425 383 202 38 0 0 1370
55 S 0 0 1 14 98 322 747 1130 1332 1370 1370 1370 1370
60 M 0 0 0 2 29 113 274 234 92 8 0 0 751
60 S 0 0 0 2 31 143 417 652 743 751 751 751 751
Corn Growing Degree Days
50 M 15 45 114 196 331 438 555 537 445 279 64 13 3033
50 S 15 60 175 370 701 1140 1695 2232 2677 2956 3020 3033 3033
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