SAINT MARIES, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(108062) SAINT MARIES
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 4 13 63 201 436 624 840 820 547 235 35 4 3822
40 S 4 17 80 281 717 1342 2182 3001 3549 3784 3818 3822 3822
45 M 0 2 17 97 289 475 685 665 399 119 7 0 2755
45 S 0 2 19 116 405 879 1564 2229 2629 2748 2755 2755 2755
50 M 0 0 3 38 163 327 530 510 260 46 1 0 1879
50 S 0 0 3 41 204 532 1062 1572 1832 1878 1879 1879 1879
55 M 0 0 0 11 74 195 376 357 144 11 0 0 1169
55 S 0 0 0 12 86 281 657 1014 1158 1169 1169 1169 1169
60 M 0 0 0 3 26 93 232 215 61 1 0 0 630
60 S 0 0 0 3 28 122 353 568 628 630 630 630 630
Corn Growing Degree Days
50 M 1 8 48 140 275 384 523 515 363 159 13 1 2429
50 S 1 9 57 197 471 855 1378 1893 2256 2415 2428 2429 2429
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 Jul 28, 2006
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