CRAIG, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(051928) CRAIG
From Year=1894 To Year=1976
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	1	17	124	362	584	824	771	482	193	15	0	3375
40 S	0	1	18	143	505	1089	1913	2685	3167	3360	3375	3375	3375
45 M	0	0	3	51	224	435	669	616	338	89	2	0	2427
45 S	0	0	3	54	278	713	1382	1999	2337	2426	2427	2427	2427
50 M	0	0	0	13	110	291	514	462	204	28	0	0	1621
50 S	0	0	0	13	123	414	928	1390	1594	1621	1621	1621	1621
55 M	0	0	0	1	36	161	359	308	94	4	0	0	964
55 S	0	0	0	1	37	199	558	866	960	964	964	964	964
60 M	0	0	0	0	6	64	208	162	29	0	0	0	469
60 S	0	0	0	0	6	70	278	440	468	469	469	469	469

Corn Growing Degree Days
50 M	0	2	27	124	279	408	544	516	372	212	42	3	2531
50 S	0	3	29	154	433	840	1385	1901	2273	2485	2528	2531	2531

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