Growing Degree Day Data for Jefferson (JFN01)

Station: Jefferson Location: 1 mile SW of Jefferson,CO
Lat: 39.35 °N Lon: -105.8 °E Elev: 9460 ft
Irrigation: dry First obs: Jan 1, 2012

Date	Accum. GDD °F	Daily GDD °F	Historical Avg °F
04/01/2026			3.5
04/02/2026	2.3	2.3	6.0
04/03/2026	2.3		7.4
04/04/2026	2.3		10.3
04/05/2026	5.5	3.1	12.7
04/06/2026	9.9	4.4	14.5
04/07/2026	13.2	3.3	16.9
04/08/2026	17.9	4.7	19.2
04/09/2026	22.3	4.4	22.4
04/10/2026	26.8	4.5	25.4
04/11/2026	31.6	4.9	29.5
04/12/2026	35.7	4.0	34.0
04/13/2026	39.0	3.3	37.8
04/14/2026	39.0		42.4
04/15/2026	39.0		46.7
04/16/2026	43.0	4.0	51.1
04/17/2026	43.0		54.5
04/18/2026	43.0		58.5
04/19/2026	46.5	3.5	62.2
04/20/2026	53.5	7.0	66.0
04/21/2026	61.9	8.4	69.1
04/22/2026	68.3	6.3	74.1
04/23/2026	68.3		78.4
04/24/2026	70.5	2.2	81.0
04/25/2026	73.0	2.5	84.0
04/26/2026	73.3	0.3	87.2
04/27/2026	74.3	1.0	91.5
04/28/2026	74.3		96.1
04/29/2026	74.7	0.4	100.9
04/30/2026	74.7		106.0
05/01/2026	74.7		111.2
05/02/2026	77.6	2.8	114.8
05/03/2026	81.3	3.8	118.8
05/04/2026	84.2	2.8	122.8
05/05/2026	84.2		127.0
05/06/2026	84.2		132.4
05/07/2026	84.2		137.2
05/08/2026	89.4	5.2	142.5
05/09/2026	95.7	6.3	147.3
05/10/2026	102.4	6.7	152.6
05/11/2026	111.8	9.5	159.2
05/12/2026	124.0	12.2	165.1
05/13/2026	135.5	11.5	171.5
05/14/2026	145.2	9.8	177.8
05/15/2026	154.6	9.3	183.9
05/16/2026	163.2	8.6	190.4
05/17/2026	166.7	3.5	196.0
05/18/2026	167.1	0.4	202.2
05/19/2026	167.1		210.4
05/20/2026	167.1		215.3
05/21/2026	172.0	4.9	220.7
05/22/2026	176.2	4.1	227.0
05/23/2026	181.3	5.2	233.9
05/24/2026	188.1	6.7	240.8
05/25/2026			247.1
05/26/2026			253.6
05/27/2026			260.0
05/28/2026			267.4
05/29/2026			274.0
05/30/2026			280.4
05/31/2026			287.0
Date	Accum. GDD °F	Daily GDD °F	Historical Avg °F