MT RUSHMORE NATL MEM, SOUTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(395870) MT RUSHMORE NATL MEM
From Year=1962 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 20 24 68 161 384 662 927 883 582 285 80 23 4099
40 S 20 44 111 272 656 1318 2245 3128 3711 3996 4076 4099 4099
45 M 6 6 30 88 256 514 772 728 441 179 37 7 3064
45 S 6 12 43 130 386 900 1672 2400 2842 3021 3058 3064 3064
50 M 1 1 11 43 152 371 617 574 310 99 13 1 2195
50 S 1 2 14 56 208 579 1196 1770 2081 2180 2193 2195 2195
55 M 0 0 3 18 78 241 464 422 199 46 4 0 1475
55 S 0 0 3 21 99 340 804 1226 1425 1471 1475 1475 1475
60 M 0 0 0 6 33 136 316 278 111 17 0 0 898
60 S 0 0 0 6 39 176 492 770 880 898 898 898 898
Corn Growing Degree Days
50 M 9 12 42 96 215 392 601 569 348 160 42 10 2497
50 S 9 21 63 159 374 766 1367 1936 2284 2444 2487 2497 2497
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