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Period of Record General Climate Summary - Growing Degree Days

Station:(138026) SWEA CITY
From Year=1954 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 3 50 241 603 858 1006 926 645 326 59 3 4722
40 S 0 4 54 294 898 1756 2762 3688 4334 4660 4719 4722 4722
45 M 0 1 24 142 452 708 851 771 497 207 26 1 3681
45 S 0 1 24 166 619 1327 2178 2949 3447 3654 3680 3681 3681
50 M 0 0 10 73 313 559 696 616 355 117 9 0 2747
50 S 0 0 10 83 396 954 1650 2266 2621 2738 2747 2747 2747
55 M 0 0 3 33 194 410 541 462 226 57 2 0 1928
55 S 0 0 3 36 230 641 1181 1643 1869 1926 1928 1928 1928
60 M 0 0 1 13 103 269 387 311 124 23 0 0 1231
60 S 0 0 1 14 117 386 772 1084 1208 1230 1231 1231 1231
Corn Growing Degree Days
50 M 1 3 35 155 366 551 674 607 401 205 39 2 3039
50 S 1 3 38 193 559 1110 1784 2391 2792 2997 3037 3039 3039
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