COATESVILLE 1 SW, PENNSYLVANIA

Period of Record General Climate Summary - Growing Degree Days

Station:(361589) COATESVILLE 1 SW
From Year=1894 To Year=1982
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 21 20 110 325 652 893 1070 1010 779 446 154 31 5511
40 S 21 41 151 477 1129 2022 3091 4101 4880 5326 5480 5511 5511
45 M 7 7 54 203 498 743 915 855 629 303 79 10 4303
45 S 7 14 68 271 769 1512 2427 3282 3911 4214 4293 4303 4303
50 M 2 2 24 112 349 593 760 700 481 182 34 2 3240
50 S 2 4 28 140 488 1082 1841 2541 3022 3203 3237 3240 3240
55 M 1 0 9 54 217 444 605 545 337 93 12 0 2317
55 S 1 1 10 64 281 725 1330 1874 2211 2305 2317 2317 2317
60 M 0 0 3 23 114 300 450 391 209 39 3 0 1531
60 S 0 0 3 26 139 439 889 1280 1489 1528 1531 1531 1531
Corn Growing Degree Days
50 M 13 15 75 197 396 582 725 679 500 273 92 19 3567
50 S 13 28 103 301 696 1279 2003 2682 3183 3455 3547 3567 3567
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