EAU CLAIRE RGNL AP, WISCONSIN

Period of Record General Climate Summary - Growing Degree Days

Station:(472428) EAU CLAIRE FAA AIRPORT
From Year=1949 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 1 35 205 535 796 968 890 579 267 41 2 4318
40 S 0 1 36 240 775 1571 2539 3429 4008 4275 4316 4318 4318
45 M 0 0 16 119 387 646 813 735 432 160 15 1 3324
45 S 0 0 16 135 522 1168 1980 2716 3148 3308 3323 3324 3324
50 M 0 0 7 61 254 496 658 580 295 84 4 0 2440
50 S 0 0 7 69 322 819 1476 2056 2351 2436 2440 2440 2440
55 M 0 0 3 28 146 351 503 426 179 37 1 0 1674
55 S 0 0 3 31 177 528 1031 1457 1635 1673 1674 1674 1674
60 M 0 0 1 11 73 219 349 277 93 13 0 0 1037
60 S 0 0 1 12 85 304 653 930 1023 1037 1037 1037 1037
Corn Growing Degree Days
50 M 0 1 24 136 325 504 638 577 348 159 24 1 2737
50 S 0 1 25 161 486 990 1628 2205 2553 2711 2736 2737 2737
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