CALLAO, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(421144) CALLAO
From Year=1902 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	11	26	128	276	540	781	1050	998	660	316	65	14	4865
40 S	11	38	166	441	981	1762	2812	3810	4470	4786	4851	4865	4865
45 M	3	8	57	162	390	631	895	843	511	188	24	4	3717
45 S	3	11	68	230	620	1251	2146	2989	3500	3688	3712	3717	3717
50 M	1	2	19	80	254	482	740	688	367	94	7	1	2735
50 S	1	2	22	102	356	838	1578	2266	2633	2727	2734	2735	2735
55 M	0	0	5	31	143	338	585	534	235	38	1	0	1910
55 S	0	0	5	36	179	518	1102	1636	1871	1909	1910	1910	1910
60 M	0	0	0	9	65	212	431	381	125	11	0	0	1234
60 S	0	0	1	9	75	286	717	1098	1223	1234	1234	1234	1234

Corn Growing Degree Days
50 M	13	34	119	213	360	495	663	638	448	257	72	15	3326
50 S	13	47	166	379	739	1234	1897	2535	2982	3239	3311	3326	3326

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