| Weather Data for Northwest Research-Extension Center, Colby, Kansas | |||||||||||||||
| Year 2001 | 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 | 13 | 90 | 45 | 60 | 57 | 722 | 208 | 0.00 | 84 | 0.44 | 0.09 | 0.09 | 0.36 | 0.36 |
| 5 | MAY | 14 | 91 | 53 | 63 | 59 | 676 | 147 | 0.00 | 79 | 0.38 | 0.08 | 0.08 | 0.30 | 0.33 |
| 5 | MAY | 15 | 92 | 57 | 65 | 59 | 684 | 63 | 0.00 | 70 | 0.30 | 0.06 | 0.07 | 0.24 | 0.30 |
| 5 | MAY | 16 | 89 | 60 | 62 | 59 | 637 | 81 | 0.00 | 84 | 0.29 | 0.06 | 0.06 | 0.24 | 0.26 |
| 5 | MAY | 17 | 73 | 53 | 58 | 52 | 509 | 94 | 0.00 | 67 | 0.22 | 0.04 | 0.05 | 0.18 | 0.22 |
| 5 | MAY | 18 | 74 | 53 | 59 | 59 | 645 | 68 | 0.00 | 100 | 0.20 | 0.04 | 0.05 | 0.16 | 0.19 |
| 5 | MAY | 19 | 76 | 54 | 59 | 58 | 281 | 80 | 0.00 | 94 | 0.13 | 0.03 | 0.04 | 0.11 | 0.15 |
| 5 | MAY | 20 | 78 | 36 | 41 | 40 | 589 | 211 | 0.06 | 92 | 0.39 | 0.08 | 0.05 | 0.31 | 0.19 |
| 5 | MAY | 21 | 61 | 38 | 51 | 44 | 689 | 165 | 0.00 | 57 | 0.26 | 0.05 | 0.05 | 0.21 | 0.21 |
| 5 | MAY | 22 | 72 | 40 | 54 | 47 | 684 | 137 | 0.00 | 59 | 0.29 | 0.06 | 0.06 | 0.23 | 0.25 |
| 5 | MAY | 23 | 75 | 33 | 45 | 41 | 733 | 132 | 0.00 | 71 | 0.33 | 0.07 | 0.06 | 0.26 | 0.23 |
| 5 | MAY | 24 | 67 | 32 | 41 | 41 | 678 | 120 | 0.00 | 100 | 0.23 | 0.05 | 0.06 | 0.18 | 0.23 |
| 5 | MAY | 25 | 68 | 40 | 55 | 49 | 681 | 63 | 0.00 | 65 | 0.21 | 0.05 | 0.06 | 0.17 | 0.20 |
| 5 | MAY | 26 | 80 | 50 | 58 | 58 | 496 | 57 | 0.01 | 100 | 0.18 | 0.04 | 0.05 | 0.15 | 0.17 |
| 5 | MAY | 27 | 79 | 42 | 55 | 54 | 329 | 59 | 0.00 | 94 | 0.15 | 0.03 | 0.04 | 0.12 | 0.14 |
| 5 | MAY | 28 | 80 | 54 | 55 | 55 | 637 | 124 | 0.58 | 100 | 0.28 | 0.07 | 0.05 | 0.23 | 0.16 |
| 5 | MAY | 29 | 68 | 52 | 57 | 57 | 142 | 90 | 0.38 | 100 | 0.07 | 0.02 | 0.04 | 0.05 | 0.13 |
| 5 | MAY | 30 | 70 | 54 | 55 | 53 | 447 | 161 | 0.00 | 88 | 0.22 | 0.06 | 0.05 | 0.18 | 0.15 |
| 5 | MAY | 31 | 73 | 54 | 59 | 59 | 593 | 68 | 0.03 | 100 | 0.19 | 0.05 | 0.04 | 0.15 | 0.13 |
| 6 | JUN | 1 | 85 | 45 | 51 | 46 | 704 | 75 | 0.00 | 69 | 0.31 | 0.09 | 0.07 | 0.25 | 0.19 |
| 6 | JUN | 2 | 73 | 49 | 55 | 55 | 723 | 159 | 0.00 | 100 | 0.26 | 0.08 | 0.08 | 0.21 | 0.20 |
| 6 | JUN | 3 | 68 | 47 | 49 | 49 | 193 | 148 | 0.05 | 100 | 0.14 | 0.04 | 0.07 | 0.11 | 0.19 |
| 6 | JUN | 4 | 67 | 47 | 49 | 49 | 164 | 97 | 0.01 | 100 | 0.10 | 0.04 | 0.06 | 0.08 | 0.13 |
| 6 | JUN | 5 | 75 | 49 | 60 | 60 | 645 | 70 | 0.00 | 100 | 0.20 | 0.07 | 0.05 | 0.16 | 0.12 |
| 6 | JUN | 6 | 79 | 59 | 63 | 63 | 597 | 92 | 0.00 | 100 | 0.22 | 0.08 | 0.06 | 0.18 | 0.14 |
| 6 | JUN | 7 | 77 | 59 | 60 | 59 | 319 | 98 | 0.00 | 94 | 0.17 | 0.06 | 0.07 | 0.13 | 0.16 |
| 6 | JUN | 8 | 82 | 59 | 65 | 64 | 611 | 105 | 0.00 | 95 | 0.25 | 0.10 | 0.08 | 0.20 | 0.17 |
| 6 | JUN | 9 | 90 | 54 | 75 | 64 | 625 | 138 | 0.00 | 55 | 0.35 | 0.14 | 0.10 | 0.28 | 0.20 |
| 6 | JUN | 10 | 97 | 63 | 72 | 65 | 705 | 81 | 0.00 | 69 | 0.35 | 0.15 | 0.13 | 0.28 | 0.25 |
| 6 | JUN | 11 | 97 | 61 | 69 | 66 | 735 | 103 | 0.00 | 86 | 0.37 | 0.17 | 0.15 | 0.29 | 0.28 |
| 6 | JUN | 12 | 94 | 59 | 64 | 59 | 565 | 144 | 0.00 | 75 | 0.38 | 0.18 | 0.16 | 0.31 | 0.29 |
| 6 | JUN | 13 | 83 | 46 | 51 | 48 | 699 | 189 | 0.00 | 81 | 0.42 | 0.20 | 0.18 | 0.33 | 0.31 |
| 6 | JUN | 14 | 77 | 44 | 58 | 49 | 741 | 111 | 0.00 | 52 | 0.32 | 0.16 | 0.18 | 0.26 | 0.30 |
| 6 | JUN | 15 | 90 | 52 | 60 | 55 | 774 | 128 | 0.00 | 73 | 0.40 | 0.21 | 0.19 | 0.32 | 0.30 |
| 6 | JUN | 16 | 88 | 59 | 70 | 62 | 758 | 99 | 0.00 | 64 | 0.34 | 0.18 | 0.18 | 0.28 | 0.29 |
| 6 | JUN | 17 | 102 | 63 | 68 | 60 | 607 | 176 | 0.28 | 63 | 0.51 | 0.28 | 0.22 | 0.41 | 0.34 |
| 6 | JUN | 18 | 104 | 55 | 56 | 51 | 643 | 144 | 0.04 | 71 | 0.51 | 0.29 | 0.25 | 0.41 | 0.37 |
| 6 | JUN | 19 | 70 | 55 | 57 | 55 | 442 | 86 | 0.00 | 88 | 0.17 | 0.10 | 0.23 | 0.14 | 0.32 |
| 6 | JUN | 20 | 67 | 45 | 54 | 52 | 190 | 63 | 0.00 | 88 | 0.09 | 0.05 | 0.15 | 0.07 | 0.21 |
| 6 | JUN | 21 | 87 | 49 | 61 | 55 | 767 | 55 | 0.00 | 69 | 0.30 | 0.19 | 0.11 | 0.24 | 0.15 |
| 6 | JUN | 22 | 91 | 59 | 76 | 63 | 738 | 111 | 0.00 | 49 | 0.37 | 0.24 | 0.16 | 0.30 | 0.20 |
| 6 | JUN | 23 | 97 | 64 | 72 | 67 | 755 | 123 | 0.00 | 77 | 0.40 | 0.27 | 0.23 | 0.32 | 0.29 |
| 6 | JUN | 24 | 98 | 67 | 72 | 65 | 743 | 245 | 0.00 | 69 | 0.58 | 0.39 | 0.30 | 0.46 | 0.36 |
| 6 | JUN | 25 | 98 | 70 | 71 | 64 | 676 | 218 | 0.00 | 69 | 0.54 | 0.38 | 0.35 | 0.43 | 0.40 |
| 6 | JUN | 26 | 98 | 64 | 69 | 65 | 694 | 175 | 0.00 | 81 | 0.46 | 0.33 | 0.37 | 0.37 | 0.42 |
| 6 | JUN | 27 | 97 | 65 | 71 | 66 | 724 | 172 | 0.00 | 77 | 0.45 | 0.33 | 0.34 | 0.36 | 0.39 |
| 6 | JUN | 28 | 99 | 61 | 69 | 66 | 678 | 74 | 0.00 | 86 | 0.33 | 0.25 | 0.30 | 0.26 | 0.33 |
| 6 | JUN | 29 | 97 | 61 | 68 | 66 | 683 | 90 | 0.00 | 90 | 0.34 | 0.26 | 0.28 | 0.27 | 0.30 |
| 6 | JUN | 30 | 96 | 66 | 73 | 65 | 724 | 118 | 0.05 | 65 | 0.40 | 0.31 | 0.27 | 0.32 | 0.28 |
| 7 | JUL | 1 | 94 | 61 | 71 | 66 | 658 | 161 | 0.05 | 77 | 0.39 | 0.31 | 0.29 | 0.31 | 0.30 |
| 7 | JUL | 2 | 96 | 61 | 74 | 63 | 721 | 148 | 0.00 | 54 | 0.45 | 0.36 | 0.33 | 0.36 | 0.33 |
| 7 | JUL | 3 | 99 | 67 | 72 | 70 | 676 | 75 | 0.00 | 91 | 0.33 | 0.27 | 0.31 | 0.26 | 0.31 |
| 7 | JUL | 4 | 98 | 66 | 70 | 68 | 695 | 125 | 0.13 | 90 | 0.38 | 0.32 | 0.32 | 0.31 | 0.31 |
| 7 | JUL | 5 | 95 | 65 | 75 | 65 | 642 | 143 | 0.00 | 59 | 0.40 | 0.34 | 0.31 | 0.32 | 0.30 |
| 7 | JUL | 6 | 105 | 65 | 75 | 64 | 740 | 150 | 0.00 | 55 | 0.52 | 0.45 | 0.37 | 0.42 | 0.35 |
| 7 | JUL | 7 | 106 | 67 | 72 | 67 | 726 | 114 | 0.00 | 77 | 0.44 | 0.39 | 0.40 | 0.35 | 0.36 |
| 7 | JUL | 8 | 98 | 65 | 74 | 70 | 673 | 102 | 0.00 | 82 | 0.35 | 0.31 | 0.38 | 0.28 | 0.35 |
| 7 | JUL | 9 | 100 | 68 | 70 | 67 | 716 | 131 | 0.00 | 86 | 0.42 | 0.38 | 0.36 | 0.34 | 0.32 |
| 7 | JUL | 10 | 95 | 68 | 70 | 68 | 683 | 134 | 0.00 | 90 | 0.37 | 0.34 | 0.34 | 0.30 | 0.30 |
| 7 | JUL | 11 | 90 | 64 | 70 | 68 | 566 | 76 | 0.07 | 90 | 0.25 | 0.23 | 0.32 | 0.20 | 0.28 |
| 7 | JUL | 12 | 93 | 67 | 68 | 68 | 645 | 71 | 0.03 | 100 | 0.29 | 0.27 | 0.28 | 0.23 | 0.24 |
| 7 | JUL | 13 | 86 | 66 | 67 | 66 | 540 | 80 | 0.00 | 95 | 0.24 | 0.22 | 0.24 | 0.19 | 0.21 |
| 7 | JUL | 14 | 85 | 63 | 65 | 65 | 409 | 130 | 0.30 | 100 | 0.22 | 0.21 | 0.23 | 0.18 | 0.20 |
| 7 | JUL | 15 | 91 | 63 | 71 | 67 | 631 | 85 | 0.00 | 82 | 0.29 | 0.27 | 0.24 | 0.23 | 0.20 |
| 7 | JUL | 16 | 97 | 68 | 74 | 67 | 731 | 77 | 0.00 | 70 | 0.35 | 0.34 | 0.27 | 0.28 | 0.23 |
| 7 | JUL | 17 | 102 | 65 | 73 | 66 | 601 | 89 | 0.00 | 69 | 0.35 | 0.34 | 0.32 | 0.28 | 0.26 |
| 7 | JUL | 18 | 101 | 66 | 75 | 67 | 581 | 88 | 0.00 | 66 | 0.34 | 0.32 | 0.33 | 0.27 | 0.28 |
| 7 | JUL | 19 | 101 | 67 | 73 | 69 | 579 | 109 | 0.00 | 82 | 0.35 | 0.34 | 0.33 | 0.28 | 0.28 |
| 7 | JUL | 20 | 99 | 69 | 74 | 67 | 590 | 114 | 0.00 | 70 | 0.37 | 0.35 | 0.34 | 0.29 | 0.28 |
| 7 | JUL | 21 | 102 | 66 | 80 | 68 | 684 | 113 | 0.00 | 54 | 0.41 | 0.40 | 0.36 | 0.33 | 0.30 |
| 7 | JUL | 22 | 102 | 63 | 70 | 65 | 631 | 99 | 0.00 | 77 | 0.37 | 0.36 | 0.37 | 0.30 | 0.31 |
| 7 | JUL | 23 | 95 | 62 | 67 | 67 | 655 | 118 | 1.18 | 100 | 0.33 | 0.33 | 0.36 | 0.27 | 0.30 |
| 7 | JUL | 24 | 90 | 63 | 67 | 66 | 670 | 58 | 0.96 | 95 | 0.27 | 0.26 | 0.32 | 0.22 | 0.26 |
| 7 | JUL | 25 | 85 | 66 | 67 | 67 | 648 | 93 | 0.01 | 100 | 0.26 | 0.26 | 0.28 | 0.21 | 0.23 |
| 7 | JUL | 26 | 87 | 63 | 67 | 66 | 644 | 126 | 0.30 | 95 | 0.29 | 0.29 | 0.27 | 0.24 | 0.22 |
| 7 | JUL | 27 | 87 | 61 | 67 | 67 | 478 | 67 | 0.00 | 100 | 0.20 | 0.20 | 0.25 | 0.16 | 0.20 |
| 7 | JUL | 28 | 88 | 66 | 71 | 70 | 692 | 83 | 0.00 | 95 | 0.28 | 0.28 | 0.25 | 0.22 | 0.20 |
| 7 | JUL | 29 | 97 | 66 | 72 | 68 | 694 | 121 | 0.00 | 82 | 0.37 | 0.37 | 0.28 | 0.30 | 0.23 |
| 7 | JUL | 30 | 99 | 72 | 75 | 66 | 646 | 184 | 0.00 | 62 | 0.49 | 0.49 | 0.38 | 0.39 | 0.30 |
| 7 | JUL | 31 | 98 | 65 | 70 | 67 | 646 | 162 | 0.00 | 86 | 0.41 | 0.41 | 0.42 | 0.33 | 0.34 |
| 8 | AUG | 1 | 95 | 63 | 72 | 66 | 634 | 66 | 0.00 | 73 | 0.29 | 0.29 | 0.40 | 0.23 | 0.32 |
| 8 | AUG | 2 | 100 | 70 | 74 | 65 | 676 | 124 | 0.00 | 62 | 0.42 | 0.42 | 0.37 | 0.34 | 0.30 |
| 8 | AUG | 3 | 100 | 67 | 71 | 64 | 683 | 134 | 0.00 | 69 | 0.43 | 0.43 | 0.38 | 0.34 | 0.30 |
| 8 | AUG | 4 | 97 | 67 | 71 | 60 | 679 | 166 | 0.00 | 53 | 0.48 | 0.48 | 0.44 | 0.39 | 0.36 |
| 8 | AUG | 5 | 102 | 65 | 75 | 66 | 646 | 97 | 0.00 | 62 | 0.37 | 0.37 | 0.43 | 0.30 | 0.34 |
| 8 | AUG | 6 | 101 | 63 | 69 | 64 | 631 | 62 | 0.00 | 77 | 0.31 | 0.31 | 0.39 | 0.25 | 0.31 |
| 8 | AUG | 7 | 98 | 59 | 66 | 60 | 642 | 68 | 0.00 | 71 | 0.32 | 0.31 | 0.33 | 0.26 | 0.27 |
| 8 | AUG | 8 | 97 | 59 | 68 | 61 | 647 | 108 | 0.00 | 67 | 0.37 | 0.36 | 0.33 | 0.29 | 0.27 |
| 8 | AUG | 9 | 84 | 56 | 57 | 56 | 623 | 133 | 0.05 | 94 | 0.31 | 0.30 | 0.32 | 0.25 | 0.27 |
| 8 | AUG | 10 | 77 | 56 | 61 | 59 | 556 | 78 | 0.00 | 89 | 0.21 | 0.20 | 0.29 | 0.16 | 0.24 |
| 8 | AUG | 11 | 87 | 58 | 65 | 65 | 615 | 75 | 0.00 | 100 | 0.24 | 0.23 | 0.24 | 0.19 | 0.20 |
| 8 | AUG | 12 | 92 | 59 | 61 | 60 | 629 | 121 | 0.00 | 95 | 0.34 | 0.32 | 0.25 | 0.27 | 0.21 |
| 8 | AUG | 13 | 91 | 61 | 70 | 62 | 578 | 117 | 0.00 | 64 | 0.32 | 0.31 | 0.29 | 0.26 | 0.24 |
| 8 | AUG | 14 | 91 | 61 | 63 | 63 | 439 | 168 | 0.24 | 100 | 0.31 | 0.28 | 0.30 | 0.24 | 0.26 |
| 8 | AUG | 15 | 90 | 52 | 57 | 56 | 632 | 106 | 0.00 | 94 | 0.31 | 0.29 | 0.29 | 0.25 | 0.25 |
| 8 | AUG | 16 | 88 | 55 | 60 | 59 | 568 | 66 | 0.00 | 94 | 0.24 | 0.22 | 0.27 | 0.19 | 0.23 |
| 8 | AUG | 17 | 87 | 54 | 60 | 57 | 597 | 55 | 0.00 | 84 | 0.24 | 0.22 | 0.24 | 0.19 | 0.21 |
| 8 | AUG | 18 | 91 | 55 | 60 | 58 | 649 | 91 | 0.00 | 89 | 0.31 | 0.28 | 0.24 | 0.25 | 0.21 |
| 8 | AUG | 19 | 89 | 55 | 62 | 60 | 618 | 107 | 0.00 | 89 | 0.29 | 0.26 | 0.25 | 0.24 | 0.22 |
| 8 | AUG | 20 | 97 | 63 | 71 | 61 | 583 | 120 | 0.00 | 57 | 0.37 | 0.33 | 0.29 | 0.30 | 0.26 |
| 8 | AUG | 21 | 98 | 60 | 64 | 64 | 569 | 82 | 0.44 | 100 | 0.29 | 0.26 | 0.28 | 0.23 | 0.26 |
| 8 | AUG | 22 | 89 | 64 | 67 | 66 | 419 | 64 | 0.00 | 95 | 0.20 | 0.17 | 0.25 | 0.16 | 0.23 |
| 8 | AUG | 23 | 83 | 55 | 60 | 58 | 271 | 63 | 0.96 | 89 | 0.15 | 0.13 | 0.18 | 0.12 | 0.17 |
| 8 | AUG | 24 | 79 | 58 | 59 | 59 | 556 | 49 | 0.02 | 100 | 0.19 | 0.16 | 0.15 | 0.15 | 0.14 |
| 8 | AUG | 25 | 81 | 51 | 60 | 60 | 325 | 39 | 0.00 | 100 | 0.12 | 0.10 | 0.13 | 0.10 | 0.12 |
| 8 | AUG | 26 | 90 | 55 | 60 | 58 | 602 | 68 | 0.00 | 89 | 0.26 | 0.21 | 0.16 | 0.21 | 0.15 |
| 8 | AUG | 27 | 95 | 58 | 61 | 57 | 623 | 109 | 0.00 | 79 | 0.35 | 0.28 | 0.20 | 0.28 | 0.20 |
| 8 | AUG | 28 | 95 | 58 | 67 | 64 | 611 | 150 | 0.00 | 85 | 0.36 | 0.28 | 0.26 | 0.29 | 0.26 |
| 8 | AUG | 29 | 91 | 60 | 62 | 59 | 588 | 155 | 0.00 | 84 | 0.36 | 0.28 | 0.28 | 0.29 | 0.29 |
| 8 | AUG | 30 | 83 | 58 | 61 | 60 | 496 | 98 | 0.00 | 95 | 0.22 | 0.17 | 0.24 | 0.18 | 0.25 |
| 8 | AUG | 31 | 85 | 60 | 61 | 61 | 527 | 113 | 0.13 | 100 | 0.25 | 0.18 | 0.21 | 0.20 | 0.22 |
| 9 | SEP | 1 | 90 | 57 | 61 | 61 | 509 | 173 | 0.00 | 100 | 0.32 | 0.23 | 0.19 | 0.26 | 0.21 |
| 9 | SEP | 2 | 93 | 55 | 57 | 57 | 567 | 51 | 0.00 | 100 | 0.24 | 0.17 | 0.20 | 0.19 | 0.22 |
| 9 | SEP | 3 | 93 | 54 | 56 | 56 | 515 | 43 | 0.00 | 100 | 0.22 | 0.16 | 0.19 | 0.18 | 0.21 |
| 9 | SEP | 4 | 91 | 55 | 58 | 58 | 578 | 79 | 0.00 | 100 | 0.26 | 0.19 | 0.17 | 0.21 | 0.19 |
| 9 | SEP | 5 | 89 | 59 | 65 | 64 | 526 | 123 | 0.00 | 95 | 0.26 | 0.18 | 0.17 | 0.21 | 0.20 |
| 9 | SEP | 6 | 94 | 52 | 59 | 58 | 482 | 135 | 0.00 | 94 | 0.32 | 0.22 | 0.20 | 0.26 | 0.23 |
| 9 | SEP | 7 | 64 | 48 | 50 | 48 | 149 | 132 | 0.25 | 87 | 0.12 | 0.08 | 0.16 | 0.09 | 0.19 |
| 9 | SEP | 8 | 54 | 38 | 40 | 40 | 132 | 82 | 0.34 | 100 | 0.06 | 0.04 | 0.12 | 0.05 | 0.13 |
| 9 | SEP | 9 | 76 | 39 | 47 | 45 | 588 | 57 | 0.00 | 86 | 0.20 | 0.14 | 0.09 | 0.16 | 0.10 |
| 9 | SEP | 10 | 86 | 46 | 55 | 51 | 575 | 152 | 0.00 | 76 | 0.34 | 0.24 | 0.14 | 0.27 | 0.16 |
| 9 | SEP | 11 | 90 | 50 | 55 | 53 | 563 | 71 | 0.00 | 88 | 0.26 | 0.18 | 0.19 | 0.21 | 0.21 |