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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
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 | 196.2 | 8.2 | 247.2 |
| 05/26/2026 | 200.6 | 4.3 | 253.6 |
| 05/27/2026 | 200.6 | 260.0 | |
| 05/28/2026 | 209.6 | 9.1 | 267.5 |
| 05/29/2026 | 217.2 | 7.6 | 274.2 |
| 05/30/2026 | 221.0 | 3.8 | 280.4 |
| 05/31/2026 | 228.2 | 7.1 | 287.1 |
| 06/01/2026 | 237.9 | 9.7 | 294.8 |
| 06/02/2026 | 247.2 | 9.4 | 303.3 |
| 06/03/2026 | 255.0 | 7.8 | 311.5 |
| 06/04/2026 | 265.3 | 10.3 | 320.9 |
| 06/05/2026 | 277.9 | 12.5 | 330.4 |
| 06/06/2026 | 289.9 | 12.0 | 339.5 |
| 06/07/2026 | 302.1 | 12.2 | 349.3 |
| 06/08/2026 | 313.1 | 11.0 | 359.4 |
| 06/09/2026 | 324.3 | 11.2 | 370.1 |
| 06/10/2026 | 334.4 | 10.1 | 380.8 |
| 06/11/2026 | 344.8 | 10.4 | 391.3 |
| 06/12/2026 | 356.2 | 11.4 | 402.1 |
| 06/13/2026 | 368.2 | 12.0 | 413.1 |
| 06/14/2026 | 377.9 | 9.7 | 423.0 |
| 06/15/2026 | 388.5 | 10.6 | 433.3 |
| 06/16/2026 | 401.3 | 12.7 | 444.0 |
| 06/17/2026 | 415.4 | 14.1 | 454.4 |
| 06/18/2026 | 429.2 | 13.8 | 465.1 |
| 06/19/2026 | 442.4 | 13.2 | 475.7 |
| 06/20/2026 | 456.1 | 13.7 | 487.6 |
| 06/21/2026 | 467.4 | 11.3 | 499.2 |
| 06/22/2026 | 479.5 | 12.1 | 509.9 |
| 06/23/2026 | 493.7 | 14.2 | 521.2 |
| 06/24/2026 | 507.0 | 13.4 | 531.7 |
| 06/25/2026 | 515.9 | 8.8 | 542.6 |
| 06/26/2026 | 528.4 | 12.5 | 554.3 |
| 06/27/2026 | 540.4 | 12.0 | 566.2 |
| 06/28/2026 | 552.7 | 12.3 | 577.8 |
| 06/29/2026 | 561.9 | 9.2 | 589.1 |
| 06/30/2026 | 572.8 | 10.9 | 599.1 |
| 07/01/2026 | 583.8 | 11.0 | 609.4 |
| 07/02/2026 | 583.8 | 620.2 | |
| 07/03/2026 | 596.3 | 12.5 | 632.3 |
| 07/04/2026 | 608.2 | 11.9 | 644.2 |
| 07/05/2026 | 621.6 | 13.4 | 655.9 |
| 07/06/2026 | 635.5 | 13.9 | 667.4 |
| 07/07/2026 | 648.1 | 12.6 | 679.1 |
| 07/08/2026 | 661.8 | 13.7 | 690.8 |
| 07/09/2026 | 674.1 | 12.2 | 703.7 |
| 07/10/2026 | 687.8 | 13.8 | 716.8 |
| 07/11/2026 | 703.6 | 15.8 | 729.6 |
| 07/12/2026 | 718.9 | 15.3 | 741.7 |
| 07/13/2026 | 734.7 | 15.8 | 754.0 |
| 07/14/2026 | 750.2 | 15.5 | 765.3 |
| 07/15/2026 | 764.2 | 14.0 | 776.7 |
| 07/16/2026 | 776.9 | 12.7 | 788.2 |
| 07/17/2026 | 787.5 | 10.6 | 800.2 |
| 07/18/2026 | 799.9 | 12.4 | 812.3 |
| 07/19/2026 | 816.3 | 16.4 | 824.9 |
| 07/20/2026 | 833.0 | 16.7 | 837.9 |
| 07/21/2026 | 847.5 | 14.5 | 849.8 |
| 07/22/2026 | 861.6 | 14.0 | 861.8 |
| 07/23/2026 | 872.8 | 11.3 | 874.0 |
| 07/24/2026 | 888.3 | 15.5 | 885.5 |
| 07/25/2026 | 902.8 | 14.5 | 897.3 |
| 07/26/2026 | 917.9 | 15.1 | 909.1 |
| 07/27/2026 | 931.1 | 13.3 | 921.0 |
| 07/28/2026 | 944.4 | 13.2 | 931.9 |
| 07/29/2026 | 957.3 | 13.0 | 942.8 |
| 07/30/2026 | 970.0 | 12.7 | 953.8 |
| 07/31/2026 | 983.7 | 13.7 | 964.4 |
| 08/01/2026 | 998.1 | 14.4 | 975.1 |
| 08/02/2026 | 1014.7 | 16.6 | 986.8 |
| 08/03/2026 | 1030.6 | 15.9 | 998.0 |
| 08/04/2026 | 1045.4 | 14.8 | 1009.4 |
| 08/05/2026 | 1060.0 | 14.6 | 1020.7 |
| 08/06/2026 | 1075.1 | 15.1 | 1032.5 |
| 08/07/2026 | 1090.4 | 15.3 | 1043.5 |
| 08/08/2026 | 1105.3 | 14.9 | 1054.0 |
| 08/09/2026 | 1119.1 | 13.8 | 1064.7 |
| 08/10/2026 | 1132.7 | 13.5 | 1075.3 |
| 08/11/2026 | 1146.1 | 13.5 | 1086.4 |
| 08/12/2026 | 1158.8 | 12.7 | 1097.3 |
| 08/13/2026 | 1169.0 | 10.2 | 1108.2 |
| 08/14/2026 | 1119.5 | ||
| 08/15/2026 | 1131.0 | ||
| 08/16/2026 | 1142.0 | ||
| 08/17/2026 | 1153.6 | ||
| 08/18/2026 | 1164.9 | ||
| 08/19/2026 | 1176.0 | ||
| 08/20/2026 | 1187.4 | ||
| 08/21/2026 | 1198.3 | ||
| 08/22/2026 | 1208.6 | ||
| 08/23/2026 | 1219.0 | ||
| 08/24/2026 | 1229.0 | ||
| 08/25/2026 | 1239.1 | ||
| 08/26/2026 | 1248.9 | ||
| 08/27/2026 | 1259.5 | ||
| 08/28/2026 | 1270.0 | ||
| 08/29/2026 | 1280.1 | ||
| 08/30/2026 | 1291.0 | ||
| 08/31/2026 | 1301.8 | ||
| Date | Accum. GDD °F | Daily GDD °F | Historical Avg °F |