NEEDLES FAA AIRPORT, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(046118) NEEDLES FAA AIRPORT
From Year=1948 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 407 499 722 936 1257 1503 1744 1684 1425 1080 646 405 12307
40 S 407 906 1627 2563 3821 5323 7067 8750 10175 11255 11902 12307 12307
45 M 261 360 567 786 1102 1353 1589 1529 1275 925 497 255 10497
45 S 261 620 1187 1973 3075 4428 6016 7545 8820 9745 10242 10497 10497
50 M 135 227 413 636 947 1203 1434 1374 1125 770 350 127 8739
50 S 135 361 774 1410 2357 3560 4993 6367 7492 8262 8612 8739 8739
55 M 48 114 268 487 792 1053 1279 1219 975 616 215 42 7107
55 S 48 163 431 917 1710 2762 4041 5259 6234 6850 7065 7107 7107
60 M 10 41 146 343 637 903 1124 1064 825 463 106 7 5668
60 S 10 51 197 540 1177 2080 3203 4267 5092 5555 5661 5668 5668
Corn Growing Degree Days
50 M 224 290 442 597 804 933 1095 1059 900 698 387 219 7649
50 S 224 514 956 1553 2357 3290 4385 5445 6345 7043 7429 7649 7649
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