ROCK SPRINGS FAA AP, WYOMING

Period of Record General Climate Summary - Growing Degree Days

Station:(487845) ROCK SPRINGS FAA AP
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 0 1 23 117 339 610 882 815 499 204 21 1 3512
40 S 0 2 25 142 481 1091 1973 2787 3287 3491 3511 3512 3512
45 M 0 0 5 52 211 462 727 660 359 106 4 0 2587
45 S 0 0 6 58 269 731 1458 2118 2477 2583 2587 2587 2587
50 M 0 0 1 18 111 322 572 505 230 41 0 0 1799
50 S 0 0 1 18 129 451 1023 1528 1758 1799 1799 1799 1799
55 M 0 0 0 3 43 197 418 353 120 10 0 0 1145
55 S 0 0 0 4 47 244 662 1015 1135 1145 1145 1145 1145
60 M 0 0 0 0 10 98 267 207 44 0 0 0 627
60 S 0 0 0 0 10 108 375 582 626 627 627 627 627
Corn Growing Degree Days
50 M 0 1 22 94 222 382 566 518 321 148 19 0 2293
50 S 0 2 24 118 339 721 1287 1805 2126 2274 2292 2293 2293
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