FRESNO WSO AP, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(043257) FRESNO WSO AP
From Year=1948 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 196 313 474 636 892 1077 1294 1239 1047 787 411 194 8560
40 S 196 509 983 1619 2511 3588 4882 6121 7168 7955 8366 8560 8560
45 M 88 179 321 486 737 927 1139 1084 897 632 265 84 6837
45 S 88 267 587 1074 1810 2737 3877 4960 5857 6489 6754 6837 6837
50 M 28 76 181 338 582 777 984 929 747 477 140 25 5285
50 S 28 104 285 623 1205 1982 2966 3895 4642 5119 5259 5285 5285
55 M 5 21 76 205 428 627 829 774 597 326 55 4 3945
55 S 5 25 102 306 734 1361 2190 2964 3561 3887 3941 3945 3945
60 M 0 2 22 100 281 477 674 619 447 190 12 0 2825
60 S 0 2 24 124 406 883 1557 2176 2623 2813 2825 2825 2825
Corn Growing Degree Days
50 M 88 166 268 380 552 673 796 767 659 488 234 91 5161
50 S 88 254 522 902 1454 2126 2922 3689 4348 4836 5070 5161 5161
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