KAYENTA, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(024578) KAYENTA
From Year=1915 To Year=1978
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	9	40	154	354	645	899	1108	1037	783	445	99	16	5588
40 S	9	48	202	556	1201	2100	3208	4245	5028	5473	5572	5588	5588
45 M	1	9	69	222	492	749	953	882	633	302	36	3	4351
45 S	1	10	80	302	793	1542	2495	3377	4010	4312	4348	4351	4351
50 M	0	1	21	117	345	599	798	727	484	176	7	0	3275
50 S	0	1	22	139	484	1084	1881	2609	3093	3269	3275	3275	3275
55 M	0	0	3	48	213	451	643	572	338	82	1	0	2350
55 S	0	0	4	51	264	715	1358	1930	2268	2349	2350	2350	2350
60 M	0	0	0	13	105	309	488	418	202	26	0	0	1560
60 S	0	0	0	13	118	427	915	1332	1534	1560	1560	1560	1560

Corn Growing Degree Days
50 M	11	41	135	260	425	567	705	667	505	310	97	19	3741
50 S	11	52	187	447	872	1439	2143	2810	3315	3626	3723	3741	3741

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