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Growing Degree Day Data for Boulder North West (BLD02) - Northern Water
Station: Boulder North West
Location: Foothills Park Boulder
Lat: 40.05 °N Lon: -105.3 °E Elev: 5561 ft
Irrigation: full First obs: Jul 1, 2000
Lat: 40.05 °N Lon: -105.3 °E Elev: 5561 ft
Irrigation: full First obs: Jul 1, 2000
| Date | Accum. GDD °F | Daily GDD °F | Historical Avg °F |
|---|---|---|---|
| 04/01/2026 | 7.5 | ||
| 04/02/2026 | 10.6 | 10.6 | 15.7 |
| 04/03/2026 | 10.8 | 0.2 | 21.0 |
| 04/04/2026 | 17.3 | 6.5 | 28.3 |
| 04/05/2026 | 25.1 | 7.8 | 36.6 |
| 04/06/2026 | 32.2 | 7.2 | 42.8 |
| 04/07/2026 | 43.6 | 11.3 | 49.7 |
| 04/08/2026 | 52.6 | 9.0 | 58.1 |
| 04/09/2026 | 62.9 | 10.3 | 66.3 |
| 04/10/2026 | 68.0 | 5.1 | 74.1 |
| 04/11/2026 | 79.4 | 11.4 | 82.9 |
| 04/12/2026 | 91.9 | 12.5 | 93.1 |
| 04/13/2026 | 102.1 | 10.2 | 104.2 |
| 04/14/2026 | 103.4 | 1.3 | 113.6 |
| 04/15/2026 | 110.5 | 7.1 | 122.0 |
| 04/16/2026 | 122.4 | 11.9 | 129.3 |
| 04/17/2026 | 123.2 | 0.8 | 137.8 |
| 04/18/2026 | 127.2 | 4.0 | 145.2 |
| 04/19/2026 | 138.0 | 10.8 | 152.4 |
| 04/20/2026 | 151.8 | 13.8 | 160.8 |
| 04/21/2026 | 168.2 | 16.5 | 169.0 |
| 04/22/2026 | 185.2 | 17.0 | 178.9 |
| 04/23/2026 | 190.7 | 5.5 | 187.8 |
| 04/24/2026 | 200.6 | 9.9 | 195.2 |
| 04/25/2026 | 201.5 | 0.9 | 201.4 |
| 04/26/2026 | 201.6 | 0.1 | 209.9 |
| 04/27/2026 | 202.1 | 0.6 | 218.2 |
| 04/28/2026 | 206.4 | 4.3 | 226.9 |
| 04/29/2026 | 210.3 | 4.0 | 236.5 |
| 04/30/2026 | 210.3 | 246.9 | |
| 05/01/2026 | 216.2 | 5.9 | 254.6 |
| 05/02/2026 | 227.2 | 11.0 | 262.4 |
| 05/03/2026 | 238.3 | 11.1 | 271.8 |
| 05/04/2026 | 248.0 | 9.8 | 280.9 |
| 05/05/2026 | 248.0 | 291.9 | |
| 05/06/2026 | 248.0 | 303.1 | |
| 05/07/2026 | 256.7 | 8.7 | 312.4 |
| 05/08/2026 | 266.3 | 9.6 | 321.4 |
| 05/09/2026 | 279.0 | 12.7 | 331.3 |
| 05/10/2026 | 287.8 | 8.8 | 339.9 |
| 05/11/2026 | 305.4 | 17.6 | 349.0 |
| 05/12/2026 | 318.5 | 13.1 | 360.0 |
| 05/13/2026 | 335.5 | 17.1 | 370.9 |
| 05/14/2026 | 355.6 | 20.1 | 382.1 |
| 05/15/2026 | 373.3 | 17.7 | 392.1 |
| 05/16/2026 | 388.4 | 15.1 | 404.1 |
| 05/17/2026 | 395.2 | 6.8 | 416.4 |
| 05/18/2026 | 395.2 | 428.2 | |
| 05/19/2026 | 395.2 | 440.4 | |
| 05/20/2026 | 397.8 | 2.7 | 451.9 |
| 05/21/2026 | 405.1 | 7.3 | 464.4 |
| 05/22/2026 | 412.1 | 7.0 | 476.1 |
| 05/23/2026 | 424.1 | 12.0 | 487.2 |
| 05/24/2026 | 441.7 | 17.6 | 497.7 |
| 05/25/2026 | 458.0 | 16.3 | 509.3 |
| 05/26/2026 | 471.2 | 13.3 | 521.3 |
| 05/27/2026 | 480.4 | 9.2 | 534.5 |
| 05/28/2026 | 492.8 | 12.3 | 548.2 |
| 05/29/2026 | 508.6 | 15.8 | 560.8 |
| 05/30/2026 | 520.1 | 11.5 | 573.2 |
| 05/31/2026 | 535.0 | 14.9 | 587.1 |
| 06/01/2026 | 548.9 | 13.9 | 601.9 |
| 06/02/2026 | 561.4 | 12.5 | 616.7 |
| 06/03/2026 | 575.9 | 14.6 | 630.9 |
| 06/04/2026 | 593.9 | 18.0 | 645.7 |
| 06/05/2026 | 612.1 | 18.2 | 661.9 |
| 06/06/2026 | 630.8 | 18.7 | 678.5 |
| 06/07/2026 | 649.0 | 18.2 | 694.8 |
| 06/08/2026 | 664.8 | 15.8 | 710.5 |
| 06/09/2026 | 680.5 | 15.7 | 726.7 |
| 06/10/2026 | 700.5 | 20.1 | 743.6 |
| 06/11/2026 | 715.1 | 14.6 | 760.1 |
| 06/12/2026 | 733.1 | 18.0 | 776.0 |
| 06/13/2026 | 747.9 | 14.8 | 792.6 |
| 06/14/2026 | 755.9 | 8.0 | 810.4 |
| 06/15/2026 | 770.2 | 14.3 | 828.0 |
| 06/16/2026 | 788.2 | 18.0 | 845.7 |
| 06/17/2026 | 807.6 | 19.3 | 862.8 |
| 06/18/2026 | 824.4 | 16.9 | 880.2 |
| 06/19/2026 | 841.1 | 16.7 | 898.4 |
| 06/20/2026 | 916.4 | ||
| 06/21/2026 | 935.2 | ||
| 06/22/2026 | 953.3 | ||
| 06/23/2026 | 971.4 | ||
| 06/24/2026 | 989.8 | ||
| 06/25/2026 | 1008.7 | ||
| 06/26/2026 | 1027.4 | ||
| 06/27/2026 | 1046.8 | ||
| 06/28/2026 | 1066.8 | ||
| 06/29/2026 | 1087.0 | ||
| 06/30/2026 | 1105.7 | ||
| Date | Accum. GDD °F | Daily GDD °F | Historical Avg °F |