CUYAMACA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042239) CUYAMACA
From Year=1948 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	86	102	169	271	453	680	925	911	729	463	211	96	5097
40 S	86	188	357	628	1081	1761	2686	3597	4326	4789	5001	5097	5097
45 M	26	37	80	157	311	531	770	756	579	316	104	30	3697
45 S	26	63	143	299	610	1141	1911	2668	3247	3563	3666	3697	3697
50 M	4	8	26	71	187	386	615	601	431	184	34	5	2552
50 S	4	12	38	109	296	682	1297	1898	2329	2513	2548	2552	2552
55 M	0	1	4	22	91	251	460	447	289	82	7	0	1655
55 S	0	1	5	28	118	369	830	1276	1566	1648	1655	1655	1655
60 M	0	0	0	4	31	137	308	296	164	26	1	0	966
60 S	0	0	0	4	35	172	480	776	940	966	966	966	966

Corn Growing Degree Days
50 M	65	77	116	179	286	433	603	594	474	319	154	80	3381
50 S	65	142	258	437	723	1156	1759	2353	2827	3146	3301	3381	3381

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