VERNAL ARPT, UTAH

Period of Record General Climate Summary - Growing Degree Days

Station:(429111) VERNAL ARPT
From Year=1928 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	0	2	47	215	485	717	952	887	588	258	20	1	4172
40 S	0	2	49	265	750	1466	2418	3305	3894	4152	4171	4172	4172
45 M	0	0	13	111	336	567	797	732	440	137	3	0	3136
45 S	0	0	13	124	460	1027	1824	2556	2996	3133	3136	3136	3136
50 M	0	0	2	44	203	418	642	577	297	54	0	0	2237
50 S	0	0	2	46	249	667	1309	1886	2182	2237	2237	2237	2237
55 M	0	0	0	11	97	276	487	422	167	13	0	0	1473
55 S	0	0	0	12	109	384	871	1293	1460	1473	1473	1473	1473
60 M	0	0	0	2	30	151	332	269	67	1	0	0	853
60 S	0	0	0	2	32	183	515	784	852	853	853	853	853

Corn Growing Degree Days
50 M	0	6	66	194	354	473	594	569	420	230	36	1	2943
50 S	0	7	73	266	620	1092	1687	2256	2675	2905	2941	2943	2943

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