LAWTON, OKLAHOMA

Period of Record General Climate Summary - Growing Degree Days

Station:(345063) LAWTON
From Year=1912 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	121	189	400	660	936	1162	1347	1332	1050	742	348	145	8434
40 S	121	310	711	1370	2307	3469	4817	6149	7199	7941	8289	8434	8434
45 M	56	106	272	512	782	1012	1192	1177	900	588	224	68	6891
45 S	56	162	435	946	1728	2740	3932	5110	6010	6599	6823	6891	6891
50 M	20	49	166	370	627	862	1037	1022	751	439	127	25	5494
50 S	20	69	234	604	1231	2093	3130	4153	4904	5342	5469	5494	5494
55 M	5	17	86	241	474	712	882	867	602	299	60	7	4254
55 S	5	22	109	349	823	1535	2418	3285	3887	4186	4247	4254	4254
60 M	1	4	36	133	326	562	727	712	456	179	23	2	3162
60 S	1	5	41	175	501	1063	1790	2503	2959	3137	3160	3162	3162

Corn Growing Degree Days
50 M	100	140	262	415	610	775	875	860	684	471	228	110	5530
50 S	100	240	502	917	1527	2301	3177	4037	4721	5192	5420	5530	5530

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