SALT LAKE CITY INTL AP, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(427598) SALT LAKE CITY NWSFO
From Year=1948 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	12	34	137	304	594	867	1181	1121	772	409	101	15	5547
40 S	12	46	183	487	1081	1948	3129	4250	5022	5431	5532	5547	5547
45 M	2	9	61	183	442	717	1026	966	622	270	41	4	4343
45 S	2	11	72	254	696	1414	2440	3405	4028	4298	4339	4343	4343
50 M	0	2	21	94	302	567	871	811	475	155	12	1	3311
50 S	0	2	23	116	418	985	1857	2667	3143	3298	3310	3311	3311
55 M	0	0	5	40	182	421	716	656	336	73	2	0	2430
55 S	0	0	5	45	227	648	1364	2020	2355	2428	2430	2430	2430
60 M	0	0	1	13	92	285	561	502	210	26	0	0	1692
60 S	0	0	1	14	107	392	953	1455	1665	1691	1692	1692	1692

Corn Growing Degree Days
50 M	5	20	84	183	361	545	758	728	490	254	63	7	3497
50 S	5	25	109	292	653	1198	1955	2683	3174	3427	3490	3497	3497

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