ISLAND LAKE RSVR, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(214096) ISLAND LAKE RES CANYON
From Year=1948 To Year=1995
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 0 48 365 622 732 740 330 173 0 0 3011
40 S 0 0 0 48 412 1034 1767 2507 2837 3011 3011 3011 3011
45 M 0 0 0 14 243 472 577 585 196 96 0 0 2183
45 S 0 0 0 14 257 729 1306 1892 2087 2183 2183 2183 2183
50 M 0 0 0 3 150 326 423 431 88 41 0 0 1461
50 S 0 0 0 3 153 479 901 1333 1420 1461 1461 1461 1461
55 M 0 0 0 1 84 194 275 285 22 12 0 0 873
55 S 0 0 0 1 85 279 555 840 862 873 873 873 873
60 M 0 0 0 0 41 94 150 161 3 2 0 0 450
60 S 0 0 0 0 41 135 285 446 449 450 450 450 450
Corn Growing Degree Days
50 M 0 0 0 49 235 372 452 461 166 90 0 0 1826
50 S 0 0 0 49 284 656 1108 1569 1736 1826 1826 1826 1826
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