SALT LAKE CITY ZOO, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(427655) SALT LAKE CITY ZOO
From Year=1990 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	20	37	177	326	613	846	1137	1094	775	431	119	24	5599
40 S	20	57	234	559	1172	2018	3155	4249	5024	5455	5575	5599	5599
45 M	2	8	87	204	460	696	982	939	626	292	53	7	4357
45 S	2	10	97	301	762	1458	2440	3379	4005	4297	4350	4357	4357
50 M	0	0	34	112	318	548	827	784	479	173	16	1	3292
50 S	0	0	34	147	465	1013	1840	2624	3103	3276	3291	3292	3292
55 M	0	0	10	52	197	404	672	629	337	84	2	0	2388
55 S	0	0	10	62	260	663	1335	1964	2302	2385	2388	2388	2388
60 M	0	0	2	19	104	270	517	475	208	31	0	0	1626
60 S	0	0	2	20	124	394	911	1386	1595	1625	1626	1626	1626

Corn Growing Degree Days
50 M	9	23	112	200	378	537	737	714	496	260	71	12	3549
50 S	9	32	143	344	722	1258	1995	2709	3205	3465	3536	3549	3549

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