HIBBING PWR SUBSTN, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(213727) HIBBING POWER SUBSTN
From Year=1948 To Year=1981
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 0 8 80 350 633 797 728 414 193 10 1 3214
40 S 0 0 8 88 438 1071 1869 2597 3010 3203 3213 3214 3214
45 M 0 0 3 35 223 483 642 573 277 109 2 0 2347
45 S 0 0 3 37 260 744 1386 1959 2237 2345 2347 2347 2347
50 M 0 0 0 12 124 337 487 419 165 51 0 0 1596
50 S 0 0 0 13 136 473 961 1380 1545 1596 1596 1596 1596
55 M 0 0 0 3 55 203 334 271 83 18 0 0 967
55 S 0 0 0 3 58 260 595 866 949 967 967 967 967
60 M 0 0 0 0 22 101 192 147 33 3 0 0 498
60 S 0 0 0 0 22 123 315 462 495 498 498 498 498
Corn Growing Degree Days
50 M 0 0 7 63 215 378 497 444 235 110 7 1 1956
50 S 0 0 7 70 285 663 1160 1604 1839 1949 1956 1956 1956
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