| Weather Data for Northwest Research-Extension Center, Colby, Kansas | |||||||||||||||
| Year 2002 | Note: Weather data for previous 24 hours used to calculate ET. | ||||||||||||||
| Penman Alfalfa-based reference ET | |||||||||||||||
| Temperatures in degree F | ETcorn | ETlawn | |||||||||||||
| Month | Day | Tmax | Tmin | Tdry | Twet | Solar | Wind | Rain | RH % | ETr | Today | 3 day | Today | 3 day | |
| 8:00 AM | Rad | mi/day | inches | 8:00am | inches | inches | inches | inches | inches | ||||||
| 5 | MAY | 12 | 59 | 36 | 44 | 41 | 722 | 55 | 0.00 | 78 | 0.19 | 0.04 | 0.04 | 0.15 | 0.15 |
| 5 | MAY | 13 | 75 | 38 | 57 | 47 | 750 | 21 | 0.00 | 46 | 0.22 | 0.04 | 0.04 | 0.18 | 0.16 |
| 5 | MAY | 14 | 84 | 48 | 55 | 48 | 570 | 232 | 0.00 | 60 | 0.47 | 0.09 | 0.06 | 0.38 | 0.23 |
| 5 | MAY | 15 | 88 | 52 | 54 | 53 | 674 | 47 | 0.09 | 94 | 0.26 | 0.05 | 0.06 | 0.21 | 0.26 |
| 5 | MAY | 16 | 69 | 42 | 43 | 43 | 369 | 90 | 0.36 | 100 | 0.17 | 0.03 | 0.06 | 0.13 | 0.24 |
| 5 | MAY | 17 | 65 | 43 | 43 | 42 | 692 | 21 | 0.00 | 92 | 0.18 | 0.04 | 0.04 | 0.15 | 0.16 |
| 5 | MAY | 18 | 71 | 41 | 50 | 48 | 669 | 131 | 0.00 | 87 | 0.25 | 0.05 | 0.04 | 0.20 | 0.16 |
| 5 | MAY | 19 | 78 | 43 | 46 | 46 | 730 | 146 | 0.00 | 100 | 0.33 | 0.07 | 0.05 | 0.27 | 0.20 |
| 5 | MAY | 20 | 75 | 49 | 53 | 51 | 634 | 142 | 0.00 | 88 | 0.28 | 0.06 | 0.06 | 0.22 | 0.23 |
| 5 | MAY | 21 | 82 | 55 | 57 | 50 | 634 | 261 | 0.00 | 61 | 0.50 | 0.11 | 0.08 | 0.40 | 0.30 |
| 5 | MAY | 22 | 82 | 46 | 51 | 45 | 745 | 71 | 0.00 | 63 | 0.31 | 0.06 | 0.08 | 0.25 | 0.29 |
| 5 | MAY | 23 | 72 | 32 | 33 | 30 | 760 | 79 | 0.78 | 71 | 0.29 | 0.06 | 0.08 | 0.23 | 0.29 |
| 5 | MAY | 24 | 50 | 33 | 49 | 47 | 121 | 33 | 0.06 | 87 | 0.03 | 0.01 | 0.04 | 0.02 | 0.17 |
| 5 | MAY | 25 | 76 | 49 | 57 | 56 | 775 | 46 | 0.00 | 94 | 0.24 | 0.06 | 0.04 | 0.19 | 0.15 |
| 5 | MAY | 26 | 87 | 40 | 59 | 56 | 701 | 88 | 0.00 | 83 | 0.29 | 0.07 | 0.04 | 0.23 | 0.15 |
| 5 | MAY | 27 | 85 | 49 | 58 | 55 | 629 | 48 | 0.00 | 83 | 0.24 | 0.06 | 0.06 | 0.19 | 0.21 |
| 5 | MAY | 28 | 86 | 55 | 64 | 59 | 740 | 57 | 0.00 | 75 | 0.29 | 0.07 | 0.07 | 0.23 | 0.22 |
| 5 | MAY | 29 | 94 | 57 | 65 | 58 | 680 | 16 | 0.00 | 66 | 0.25 | 0.07 | 0.07 | 0.20 | 0.21 |
| 5 | MAY | 30 | 92 | 59 | 72 | 60 | 761 | 32 | 0.00 | 50 | 0.30 | 0.08 | 0.08 | 0.24 | 0.22 |
| 5 | MAY | 31 | 105 | 66 | 71 | 64 | 719 | 79 | 0.00 | 69 | 0.39 | 0.12 | 0.09 | 0.31 | 0.25 |
| 6 | JUN | 1 | 101 | 69 | 74 | 60 | 687 | 119 | 0.00 | 44 | 0.45 | 0.14 | 0.11 | 0.36 | 0.30 |
| 6 | JUN | 2 | 105 | 62 | 64 | 61 | 596 | 92 | 0.00 | 85 | 0.38 | 0.12 | 0.13 | 0.30 | 0.33 |
| 6 | JUN | 3 | 70 | 55 | 55 | 55 | 236 | 100 | 0.52 | 100 | 0.12 | 0.04 | 0.10 | 0.10 | 0.25 |
| 6 | JUN | 4 | 68 | 52 | 57 | 57 | 309 | 36 | 0.04 | 100 | 0.10 | 0.03 | 0.07 | 0.08 | 0.16 |
| 6 | JUN | 5 | 76 | 54 | 62 | 58 | 575 | 53 | 0.00 | 79 | 0.20 | 0.07 | 0.05 | 0.16 | 0.11 |
| 6 | JUN | 6 | 93 | 60 | 66 | 61 | 769 | 142 | 0.00 | 76 | 0.42 | 0.16 | 0.09 | 0.34 | 0.19 |
| 6 | JUN | 7 | 98 | 65 | 70 | 65 | 720 | 202 | 0.00 | 77 | 0.50 | 0.20 | 0.15 | 0.40 | 0.30 |
| 6 | JUN | 8 | 97 | 67 | 72 | 66 | 737 | 224 | 0.00 | 73 | 0.53 | 0.22 | 0.19 | 0.42 | 0.39 |
| 6 | JUN | 9 | 98 | 65 | 69 | 60 | 730 | 210 | 0.00 | 59 | 0.57 | 0.24 | 0.22 | 0.45 | 0.43 |
| 6 | JUN | 10 | 88 | 65 | 69 | 58 | 693 | 90 | 0.00 | 51 | 0.34 | 0.16 | 0.20 | 0.28 | 0.38 |
| 6 | JUN | 11 | 89 | 65 | 68 | 64 | 749 | 58 | 0.02 | 81 | 0.30 | 0.14 | 0.18 | 0.24 | 0.32 |
| 6 | JUN | 12 | 91 | 53 | 56 | 55 | 650 | 36 | 0.66 | 94 | 0.26 | 0.12 | 0.14 | 0.21 | 0.24 |
| 6 | JUN | 13 | 77 | 45 | 55 | 53 | 521 | 25 | 0.02 | 88 | 0.17 | 0.09 | 0.12 | 0.14 | 0.20 |
| 6 | JUN | 14 | 82 | 54 | 62 | 58 | 792 | 7 | 0.00 | 79 | 0.25 | 0.13 | 0.11 | 0.20 | 0.18 |
| 6 | JUN | 15 | 85 | 52 | 60 | 58 | 651 | 61 | 0.00 | 89 | 0.25 | 0.14 | 0.12 | 0.20 | 0.18 |
| 6 | JUN | 16 | 83 | 59 | 66 | 59 | 720 | 81 | 0.00 | 66 | 0.30 | 0.16 | 0.14 | 0.24 | 0.21 |
| 6 | JUN | 17 | 98 | 58 | 69 | 61 | 666 | 79 | 0.00 | 64 | 0.35 | 0.20 | 0.17 | 0.28 | 0.24 |
| 6 | JUN | 18 | 103 | 70 | 73 | 67 | 714 | 100 | 0.00 | 74 | 0.41 | 0.24 | 0.20 | 0.33 | 0.28 |
| 6 | JUN | 19 | 103 | 64 | 65 | 62 | 588 | 113 | 0.00 | 85 | 0.40 | 0.24 | 0.23 | 0.32 | 0.31 |
| 6 | JUN | 20 | 88 | 64 | 73 | 63 | 602 | 111 | 0.00 | 58 | 0.32 | 0.20 | 0.23 | 0.26 | 0.30 |
| 6 | JUN | 21 | 95 | 69 | 75 | 67 | 717 | 195 | 0.00 | 66 | 0.47 | 0.30 | 0.25 | 0.38 | 0.32 |
| 6 | JUN | 22 | 100 | 68 | 73 | 65 | 697 | 182 | 0.00 | 65 | 0.51 | 0.33 | 0.28 | 0.40 | 0.35 |
| 6 | JUN | 23 | 100 | 65 | 71 | 65 | 691 | 93 | 0.00 | 73 | 0.38 | 0.26 | 0.30 | 0.30 | 0.36 |
| 6 | JUN | 24 | 98 | 63 | 69 | 64 | 692 | 66 | 0.02 | 77 | 0.33 | 0.23 | 0.27 | 0.26 | 0.32 |
| 6 | JUN | 25 | 98 | 61 | 67 | 64 | 718 | 119 | 0.14 | 85 | 0.40 | 0.28 | 0.26 | 0.32 | 0.29 |
| 6 | JUN | 26 | 91 | 59 | 70 | 64 | 706 | 19 | 0.00 | 72 | 0.26 | 0.19 | 0.23 | 0.20 | 0.26 |
| 6 | JUN | 27 | 96 | 60 | 75 | 65 | 695 | 106 | 0.00 | 59 | 0.37 | 0.28 | 0.25 | 0.30 | 0.27 |
| 6 | JUN | 28 | 98 | 70 | 76 | 75 | 734 | 150 | 0.00 | 96 | 0.38 | 0.29 | 0.25 | 0.31 | 0.27 |
| 6 | JUN | 29 | 100 | 69 | 75 | 67 | 742 | 212 | 0.00 | 66 | 0.55 | 0.43 | 0.33 | 0.44 | 0.35 |
| 6 | JUN | 30 | 101 | 64 | 68 | 65 | 728 | 208 | 0.00 | 85 | 0.53 | 0.42 | 0.38 | 0.43 | 0.39 |
| 7 | JUL | 1 | 94 | 67 | 71 | 68 | 714 | 189 | 0.00 | 86 | 0.43 | 0.34 | 0.40 | 0.34 | 0.40 |
| 7 | JUL | 2 | 97 | 66 | 73 | 69 | 701 | 137 | 0.00 | 82 | 0.39 | 0.32 | 0.36 | 0.31 | 0.36 |
| 7 | JUL | 3 | 94 | 60 | 68 | 65 | 275 | 128 | 0.00 | 85 | 0.25 | 0.21 | 0.29 | 0.20 | 0.28 |
| 7 | JUL | 4 | 89 | 64 | 68 | 65 | 601 | 157 | 0.00 | 85 | 0.34 | 0.29 | 0.27 | 0.27 | 0.26 |
| 7 | JUL | 5 | 82 | 66 | 70 | 68 | 340 | 193 | 0.00 | 1 | 0.21 | 0.18 | 0.22 | 0.17 | 0.21 |
| 7 | JUL | 6 | 90 | 61 | 69 | 65 | 637 | 162 | 0.00 | 81 | 0.35 | 0.31 | 0.26 | 0.28 | 0.24 |
| 7 | JUL | 7 | 95 | 61 | 71 | 68 | 709 | 129 | 0.00 | 86 | 0.36 | 0.32 | 0.27 | 0.29 | 0.25 |
| 7 | JUL | 8 | 98 | 65 | 74 | 67 | 743 | 86 | 0.00 | 70 | 0.37 | 0.33 | 0.32 | 0.29 | 0.29 |
| 7 | JUL | 9 | 101 | 67 | 76 | 68 | 738 | 55 | 0.00 | 67 | 0.34 | 0.31 | 0.32 | 0.27 | 0.29 |
| 7 | JUL | 10 | 97 | 64 | 65 | 59 | 716 | 107 | 0.00 | 70 | 0.40 | 0.37 | 0.34 | 0.32 | 0.30 |
| 7 | JUL | 11 | 87 | 52 | 60 | 58 | 570 | 83 | 0.00 | 89 | 0.26 | 0.24 | 0.31 | 0.21 | 0.27 |
| 7 | JUL | 12 | 84 | 49 | 59 | 57 | 726 | 72 | 0.00 | 89 | 0.28 | 0.26 | 0.29 | 0.22 | 0.25 |
| 7 | JUL | 13 | 86 | 56 | 65 | 63 | 747 | 68 | 0.00 | 90 | 0.28 | 0.27 | 0.26 | 0.23 | 0.22 |
| 7 | JUL | 14 | 91 | 62 | 69 | 64 | 749 | 114 | 0.00 | 77 | 0.36 | 0.34 | 0.29 | 0.29 | 0.25 |
| 7 | JUL | 15 | 94 | 65 | 72 | 65 | 731 | 148 | 0.00 | 69 | 0.42 | 0.40 | 0.34 | 0.33 | 0.28 |
| 7 | JUL | 16 | 96 | 65 | 70 | 65 | 722 | 142 | 0.00 | 77 | 0.42 | 0.40 | 0.38 | 0.33 | 0.32 |
| 7 | JUL | 17 | 97 | 64 | 72 | 66 | 741 | 99 | 0.00 | 73 | 0.38 | 0.36 | 0.39 | 0.30 | 0.32 |
| 7 | JUL | 18 | 101 | 67 | 72 | 67 | 748 | 63 | 0.00 | 77 | 0.36 | 0.35 | 0.37 | 0.28 | 0.31 |
| 7 | JUL | 19 | 101 | 67 | 75 | 72 | 734 | 111 | 0.00 | 87 | 0.39 | 0.37 | 0.36 | 0.31 | 0.30 |
| 7 | JUL | 20 | 101 | 66 | 73 | 67 | 679 | 132 | 0.00 | 74 | 0.42 | 0.41 | 0.38 | 0.34 | 0.31 |
| 7 | JUL | 21 | 100 | 63 | 68 | 65 | 642 | 91 | 1.30 | 85 | 0.35 | 0.34 | 0.37 | 0.28 | 0.31 |
| 7 | JUL | 22 | 84 | 59 | 66 | 61 | 728 | 66 | 0.00 | 76 | 0.28 | 0.28 | 0.34 | 0.23 | 0.28 |
| 7 | JUL | 23 | 88 | 64 | 69 | 66 | 689 | 115 | 0.00 | 86 | 0.31 | 0.31 | 0.31 | 0.25 | 0.25 |
| 7 | JUL | 24 | 99 | 63 | 71 | 63 | 721 | 88 | 0.00 | 65 | 0.38 | 0.37 | 0.32 | 0.30 | 0.26 |
| 7 | JUL | 25 | 105 | 67 | 68 | 62 | 711 | 98 | 0.00 | 72 | 0.42 | 0.42 | 0.37 | 0.34 | 0.30 |
| 7 | JUL | 26 | 98 | 68 | 70 | 65 | 648 | 53 | 0.16 | 77 | 0.30 | 0.30 | 0.36 | 0.24 | 0.29 |
| 7 | JUL | 27 | 97 | 66 | 72 | 66 | 614 | 67 | 0.00 | 73 | 0.30 | 0.30 | 0.34 | 0.24 | 0.27 |
| 7 | JUL | 28 | 91 | 57 | 66 | 60 | 458 | 65 | 0.03 | 71 | 0.24 | 0.24 | 0.28 | 0.19 | 0.22 |
| 7 | JUL | 29 | 97 | 65 | 74 | 65 | 704 | 111 | 0.00 | 62 | 0.39 | 0.39 | 0.31 | 0.31 | 0.25 |
| 7 | JUL | 30 | 100 | 63 | 70 | 65 | 708 | 159 | 0.00 | 77 | 0.46 | 0.46 | 0.36 | 0.37 | 0.29 |
| 7 | JUL | 31 | 104 | 63 | 72 | 60 | 713 | 120 | 0.00 | 50 | 0.47 | 0.47 | 0.44 | 0.37 | 0.35 |
| 8 | AUG | 1 | 84 | 54 | 62 | 54 | 638 | 132 | 0.00 | 60 | 0.34 | 0.34 | 0.42 | 0.28 | 0.34 |
| 8 | AUG | 2 | 87 | 61 | 73 | 67 | 646 | 140 | 0.00 | 74 | 0.31 | 0.30 | 0.37 | 0.24 | 0.30 |
| 8 | AUG | 3 | 97 | 67 | 70 | 67 | 573 | 139 | 0.27 | 86 | 0.36 | 0.36 | 0.33 | 0.29 | 0.27 |
| 8 | AUG | 4 | 98 | 63 | 71 | 66 | 617 | 54 | 0.00 | 77 | 0.29 | 0.28 | 0.31 | 0.23 | 0.25 |
| 8 | AUG | 5 | 100 | 65 | 70 | 62 | 675 | 111 | 0.00 | 64 | 0.40 | 0.39 | 0.34 | 0.32 | 0.28 |
| 8 | AUG | 6 | 94 | 62 | 69 | 63 | 686 | 156 | 0.00 | 72 | 0.41 | 0.40 | 0.36 | 0.33 | 0.29 |
| 8 | AUG | 7 | 94 | 69 | 72 | 67 | 681 | 168 | 0.00 | 77 | 0.41 | 0.40 | 0.40 | 0.33 | 0.33 |
| 8 | AUG | 8 | 97 | 64 | 65 | 64 | 572 | 160 | 0.94 | 95 | 0.39 | 0.38 | 0.39 | 0.31 | 0.32 |
| 8 | AUG | 9 | 88 | 60 | 65 | 63 | 404 | 82 | 0.00 | 90 | 0.21 | 0.20 | 0.33 | 0.17 | 0.27 |
| 8 | AUG | 10 | 91 | 65 | 65 | 62 | 683 | 107 | 0.00 | 85 | 0.34 | 0.33 | 0.30 | 0.27 | 0.25 |
| 8 | AUG | 11 | 95 | 62 | 67 | 64 | 558 | 152 | 0.47 | 85 | 0.36 | 0.34 | 0.29 | 0.29 | 0.24 |
| 8 | AUG | 12 | 73 | 53 | 53 | 52 | 251 | 107 | 0.02 | 94 | 0.16 | 0.15 | 0.27 | 0.12 | 0.23 |
| 8 | AUG | 13 | 77 | 52 | 59 | 55 | 682 | 68 | 0.00 | 78 | 0.24 | 0.22 | 0.24 | 0.19 | 0.20 |
| 8 | AUG | 14 | 94 | 60 | 66 | 58 | 681 | 176 | 0.00 | 62 | 0.47 | 0.43 | 0.27 | 0.37 | 0.23 |
| 8 | AUG | 15 | 83 | 60 | 67 | 65 | 673 | 116 | 0.00 | 90 | 0.27 | 0.25 | 0.30 | 0.21 | 0.26 |
| 8 | AUG | 16 | 95 | 55 | 55 | 50 | 619 | 213 | 0.00 | 71 | 0.54 | 0.49 | 0.39 | 0.43 | 0.34 |
| 8 | AUG | 17 | 75 | 53 | 58 | 58 | 577 | 114 | 0.00 | 100 | 0.21 | 0.19 | 0.31 | 0.17 | 0.27 |
| 8 | AUG | 18 | 89 | 57 | 60 | 60 | 462 | 87 | 0.00 | 100 | 0.24 | 0.21 | 0.30 | 0.19 | 0.26 |
| 8 | AUG | 19 | 76 | 59 | 64 | 64 | 378 | 99 | 0.00 | 100 | 0.14 | 0.12 | 0.17 | 0.11 | 0.15 |
| 8 | AUG | 20 | 92 | 65 | 74 | 63 | 585 | 187 | 0.00 | 54 | 0.42 | 0.37 | 0.23 | 0.34 | 0.21 |
| 8 | AUG | 21 | 93 | 65 | 69 | 61 | 531 | 67 | 0.00 | 64 | 0.27 | 0.23 | 0.24 | 0.22 | 0.22 |
| 8 | AUG | 22 | 92 | 56 | 58 | 58 | 574 | 57 | 0.03 | 100 | 0.25 | 0.21 | 0.27 | 0.20 | 0.25 |
| 8 | AUG | 23 | 92 | 59 | 64 | 64 | 567 | 88 | 0.22 | 100 | 0.26 | 0.22 | 0.22 | 0.21 | 0.21 |
| 8 | AUG | 24 | 82 | 61 | 67 | 65 | 445 | 48 | 0.03 | 90 | 0.17 | 0.14 | 0.19 | 0.13 | 0.18 |
| 8 | AUG | 25 | 87 | 64 | 67 | 67 | 597 | 81 | 0.00 | 100 | 0.24 | 0.19 | 0.18 | 0.19 | 0.18 |
| 8 | AUG | 26 | 88 | 59 | 62 | 60 | 329 | 174 | 2.10 | 89 | 0.28 | 0.22 | 0.18 | 0.23 | 0.18 |
| 8 | AUG | 27 | 80 | 61 | 64 | 64 | 401 | 67 | 0.00 | 100 | 0.16 | 0.12 | 0.18 | 0.12 | 0.18 |
| 8 | AUG | 28 | 81 | 62 | 63 | 63 | 397 | 85 | 0.00 | 100 | 0.17 | 0.13 | 0.16 | 0.14 | 0.16 |
| 8 | AUG | 29 | 85 | 60 | 62 | 62 | 565 | 116 | 0.05 | 100 | 0.25 | 0.19 | 0.15 | 0.20 | 0.16 |
| 8 | AUG | 30 | 80 | 60 | 62 | 62 | 320 | 98 | 0.04 | 100 | 0.16 | 0.12 | 0.15 | 0.12 | 0.16 |
| 8 | AUG | 31 | 88 | 61 | 64 | 63 | 578 | 127 | 0.00 | 95 | 0.28 | 0.21 | 0.17 | 0.23 | 0.19 |
| 9 | SEP | 1 | 91 | 58 | 61 | 60 | 527 | 39 | 0.00 | 95 | 0.21 | 0.15 | 0.16 | 0.17 | 0.17 |
| 9 | SEP | 2 | 88 | 58 | 60 | 54 | 585 | 96 | 0.00 | 68 | 0.30 | 0.21 | 0.19 | 0.24 | 0.21 |
| 9 | SEP | 3 | 89 | 60 | 67 | 61 | 577 | 107 | 0.00 | 71 | 0.29 | 0.20 | 0.19 | 0.23 | 0.21 |
| 9 | SEP | 4 | 93 | 60 | 63 | 60 | 479 | 151 | 0.00 | 84 | 0.34 | 0.24 | 0.22 | 0.27 | 0.25 |
| 9 | SEP | 5 | 93 | 58 | 62 | 61 | 562 | 104 | 0.00 | 95 | 0.29 | 0.20 | 0.21 | 0.23 | 0.25 |
| 9 | SEP | 6 | 92 | 63 | 68 | 63 | 566 | 164 | 0.00 | 76 | 0.36 | 0.25 | 0.23 | 0.29 | 0.26 |
| 9 | SEP | 7 | 92 | 65 | 67 | 63 | 553 | 244 | 0.00 | 81 | 0.44 | 0.31 | 0.25 | 0.35 | 0.29 |
| 9 | SEP | 8 | 90 | 64 | 67 | 64 | 557 | 211 | 0.00 | 85 | 0.37 | 0.26 | 0.27 | 0.30 | 0.31 |
| 9 | SEP | 9 | 84 | 55 | 55 | 55 | 279 | 133 | 0.64 | 100 | 0.22 | 0.15 | 0.24 | 0.18 | 0.27 |
| 9 | SEP | 10 | 69 | 54 | 57 | 55 | 226 | 57 | 0.00 | 88 | 0.10 | 0.06 | 0.16 | 0.08 | 0.18 |
| 9 | SEP | 11 | 75 | 58 | 62 | 60 | 470 | 93 | 0.00 | 89 | 0.17 | 0.12 | 0.11 | 0.14 | 0.13 |
| 9 | SEP | 12 | 83 | 56 | 57 | 57 | 421 | 94 | 0.42 | 100 | 0.20 | 0.13 | 0.10 | 0.16 | 0.13 |