SAINT JOHN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457267) SAINT JOHN
From Year=1963 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 17 30 97 229 452 632 859 844 586 274 65 14 4099
40 S 17 46 144 372 824 1457 2316 3160 3746 4020 4085 4099 4099
45 M 3 6 31 117 302 482 704 689 437 151 21 2 2946
45 S 3 9 40 157 459 941 1646 2335 2772 2924 2944 2946 2946
50 M 0 1 7 49 173 334 549 534 295 67 5 0 2013
50 S 0 1 8 56 229 563 1112 1647 1941 2008 2013 2013 2013
55 M 0 0 1 15 81 199 395 381 170 22 1 0 1265
55 S 0 0 1 16 97 295 690 1071 1242 1264 1265 1265 1265
60 M 0 0 0 3 30 95 248 236 79 5 0 0 697
60 S 0 0 0 3 33 128 377 613 692 697 697 697 697
Corn Growing Degree Days
50 M 3 14 62 154 293 399 545 538 395 203 27 3 2635
50 S 3 17 80 233 526 925 1470 2008 2402 2605 2632 2635 2635
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