ZION NATIONAL PARK, UTAH

Period of Record General Climate Summary - Cooling Degree Days

Station:(429717) ZION NATIONAL PARK
From Year=1928 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	1	8	42	158	401	676	902	841	608	295	40	1	3973
57	0	3	26	121	345	616	840	779	548	245	25	0	3547
60	0	1	10	73	265	527	747	686	459	176	10	0	2954
65	0	0	1	23	148	381	592	531	314	82	1	0	2073
70	0	0	0	4	61	244	438	376	179	25	0	0	1327

Cooling 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.
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