| TYS | Temp | Precip | Precip | HDD | CDD | ||||||||||||
| Daily | Daily | Daily | Daily | Daily | Daily | Month | Season | Year | Daily | Month | Season | Year | Month | Season | Month | Season | |
| DATE | High | Low | Avg. | HDD | CDD | Total | Total | Total | Total | Depart. | Depart. | Depart. | Depart. | Total | Total | Total | Total |
| 04/01/03 | 71 | 42 | 57 | 8 | 0 | 0 | 0.00 | 2.07 | 13.93 | -0.15 | -0.15 | -3.25 | 0.03 | 8 | 3424 | 0 | 0 |
| 04/02/03 | 74 | 51 | 63 | 2 | 0 | 0 | 0.00 | 2.07 | 13.93 | -0.14 | -0.29 | -3.39 | -0.11 | 10 | 3426 | 0 | 0 |
| 04/03/03 | 74 | 53 | 64 | 1 | 0 | 0 | 0.00 | 2.07 | 13.93 | -0.14 | -0.43 | -3.53 | -0.25 | 11 | 3427 | 0 | 0 |
| 04/04/03 | 73 | 59 | 66 | 0 | 1 | 0 | 0.00 | 2.07 | 13.93 | -0.14 | -0.57 | -3.67 | -0.39 | 11 | 3427 | 1 | 1 |
| 04/05/03 | 73 | 52 | 63 | 2 | 0 | 0.44 | 0.44 | 2.51 | 14.37 | 0.30 | -0.27 | -3.37 | -0.09 | 13 | 3429 | 1 | 1 |
| 04/06/03 | 64 | 43 | 54 | 11 | 0 | 0.43 | 0.87 | 2.94 | 14.80 | 0.29 | 0.02 | -3.08 | 0.20 | 24 | 3440 | 1 | 1 |
| 04/07/03 | 65 | 52 | 59 | 6 | 0 | 0.52 | 1.39 | 3.46 | 15.32 | 0.39 | 0.41 | -2.69 | 0.59 | 30 | 3446 | 1 | 1 |
| 04/08/03 | 61 | 54 | 58 | 7 | 0 | 1.13 | 2.52 | 4.59 | 16.45 | 1.00 | 1.41 | -1.69 | 1.59 | 37 | 3453 | 1 | 1 |
| 04/09/03 | 56 | 43 | 50 | 15 | 0 | 0.58 | 3.10 | 5.17 | 17.03 | 0.45 | 1.86 | -1.24 | 2.04 | 52 | 3468 | 1 | 1 |
| 04/10/03 | 47 | 43 | 45 | 20 | 0 | 1.04 | 4.14 | 6.21 | 18.07 | 0.91 | 2.77 | -0.33 | 2.95 | 72 | 3488 | 1 | 1 |
| 04/11/03 | 57 | 44 | 51 | 14 | 0 | 0.07 | 4.21 | 6.28 | 18.14 | -0.06 | 2.71 | -0.39 | 2.89 | 86 | 3502 | 1 | 1 |
| 04/12/03 | 73 | 38 | 56 | 9 | 0 | 0 | 4.21 | 6.28 | 18.14 | -0.13 | 2.58 | -0.52 | 2.76 | 95 | 3511 | 1 | 1 |
| 04/13/03 | 74 | 45 | 60 | 5 | 0 | 0 | 4.21 | 6.28 | 18.14 | -0.13 | 2.45 | -0.65 | 2.63 | 100 | 3516 | 1 | 1 |
| 04/14/03 | 80 | 42 | 61 | 4 | 0 | 0 | 4.21 | 6.28 | 18.14 | -0.13 | 2.32 | -0.78 | 2.50 | 104 | 3520 | 1 | 1 |
| 04/15/03 | 81 | 50 | 66 | 0 | 1 | 0 | 4.21 | 6.28 | 18.14 | -0.13 | 2.19 | -0.91 | 2.37 | 104 | 3520 | 2 | 2 |
| 04/16/03 | 78 | 53 | 66 | 0 | 1 | T | 4.21 | 6.28 | 18.14 | -0.13 | 2.06 | -1.04 | 2.24 | 104 | 3520 | 3 | 3 |
| 04/17/03 | 70 | 58 | 64 | 1 | 0 | 1.06 | 5.27 | 7.34 | 19.20 | 0.93 | 2.99 | -0.11 | 3.17 | 105 | 3521 | 3 | 3 |
| 04/18/03 | 72 | 55 | 64 | 1 | 0 | 0.02 | 5.29 | 7.36 | 19.22 | -0.11 | 2.88 | -0.22 | 3.06 | 106 | 3522 | 3 | 3 |
| 04/19/03 | 77 | 50 | 64 | 1 | 0 | 0 | 5.29 | 7.36 | 19.22 | -0.13 | 2.75 | -0.35 | 2.93 | 107 | 3523 | 3 | 3 |
| 04/20/03 | 75 | 61 | 68 | 0 | 3 | T | 5.29 | 7.36 | 19.22 | -0.13 | 2.62 | -0.48 | 2.80 | 107 | 3523 | 6 | 6 |
| 04/21/03 | 76 | 58 | 67 | 0 | 2 | 0.14 | 5.43 | 7.50 | 19.36 | 0.01 | 2.63 | -0.47 | 2.81 | 107 | 3523 | 8 | 8 |
| 04/22/03 | 60 | 48 | 54 | 11 | 0 | 0 | 5.43 | 7.50 | 19.36 | -0.13 | 2.50 | -0.60 | 2.68 | 118 | 3534 | 8 | 8 |
| 04/23/03 | 67 | 42 | 55 | 10 | 0 | 0 | 5.43 | 7.50 | 19.36 | -0.13 | 2.37 | -0.73 | 2.55 | 128 | 3544 | 8 | 8 |
| 04/24/03 | 67 | 42 | 55 | 10 | 0 | T | 5.43 | 7.50 | 19.36 | -0.13 | 2.24 | -0.86 | 2.42 | 138 | 3554 | 8 | 8 |
| 04/25/03 | 72 | 51 | 62 | 3 | 0 | 0.35 | 5.78 | 7.85 | 19.71 | 0.22 | 2.46 | -0.64 | 2.64 | 141 | 3557 | 8 | 8 |
| 04/26/03 | 68 | 53 | 61 | 4 | 0 | 0.14 | 5.92 | 7.99 | 19.85 | 0.01 | 2.47 | -0.63 | 2.65 | 145 | 3561 | 8 | 8 |
| 04/27/03 | 74 | 51 | 63 | 2 | 0 | 0 | 5.92 | 7.99 | 19.85 | -0.13 | 2.34 | -0.76 | 2.52 | 147 | 3563 | 8 | 8 |
| 04/28/03 | 79 | 48 | 64 | 1 | 0 | 0 | 5.92 | 7.99 | 19.85 | -0.13 | 2.21 | -0.89 | 2.39 | 148 | 3564 | 8 | 8 |
| 04/29/03 | 83 | 60 | 72 | 0 | 7 | T | 5.92 | 7.99 | 19.85 | -0.14 | 2.07 | -1.03 | 2.25 | 148 | 3564 | 15 | 15 |
| 04/30/03 | 83 | 59 | 71 | 0 | 6 | 0.03 | 5.95 | 8.02 | 19.88 | -0.11 | 1.96 | -1.14 | 2.14 | 148 | 3564 | 21 | 21 |
| Average | 70.8 | 50 | 60.4 | ||||||||||||||
| Depart | 1.8 | 3.4 | 2.6 | -79 | -58 | -6 | -12 |