POTTER VALLEY P H, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047109) POTTER VALLEY P H
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 172 241 336 444 642 808 1036 990 852 627 317 164 6629
40 S 172 413 749 1194 1836 2644 3680 4670 5522 6149 6465 6629 6629
45 M 67 121 195 297 487 658 881 835 702 472 181 60 4956
45 S 67 187 382 679 1166 1824 2706 3541 4243 4715 4895 4956 4956
50 M 13 40 86 167 335 508 726 680 552 320 77 13 3517
50 S 13 53 139 306 641 1149 1875 2555 3107 3427 3504 3517 3517
55 M 1 7 25 73 199 360 571 525 403 183 20 1 2367
55 S 1 7 32 105 304 664 1235 1760 2163 2346 2366 2367 2367
60 M 0 0 4 22 97 222 417 371 259 80 3 0 1475
60 S 0 0 5 26 123 345 762 1132 1391 1472 1475 1475 1475
Corn Growing Degree Days
50 M 99 147 213 295 408 496 609 582 515 412 203 95 4074
50 S 99 246 459 755 1163 1658 2267 2849 3364 3776 3979 4074 4074
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