ROTHSAY, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(217149) ROTHSAY
From Year=1959 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 0 22 186 523 789 957 902 577 245 28 1 4229
40 S 0 0 22 208 732 1520 2477 3379 3956 4201 4228 4229 4229
45 M 0 0 8 105 379 639 802 747 431 144 10 0 3265
45 S 0 0 8 113 492 1131 1932 2679 3110 3255 3265 3265 3265
50 M 0 0 2 51 250 490 647 592 297 74 3 0 2407
50 S 0 0 2 54 304 794 1440 2032 2329 2404 2407 2407 2407
55 M 0 0 1 22 144 344 492 438 183 32 0 0 1656
55 S 0 0 1 22 167 511 1003 1440 1624 1656 1656 1656 1656
60 M 0 0 0 7 70 210 339 290 99 11 0 0 1027
60 S 0 0 0 8 78 288 627 917 1016 1027 1027 1027 1027
Corn Growing Degree Days
50 M 0 0 15 119 316 498 632 585 348 144 17 0 2674
50 S 0 0 15 134 450 948 1580 2165 2513 2657 2674 2674 2674
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