Average Daily Temperatures for April
| Day |
Ave Maximum Temperature | Ave Minimum Temperature |
| All Years | Last 20 Years |
All Years | Last 20 Years |
| 1 | 58.33 | 60.08 | 34.52 | 36.02 |
| 2 | 59.02 | 60.41 | 35.07 | 36.36 |
| 3 | 59.67 | 60.64 | 35.60 | 36.59 |
| 4 | 60.25 | 60.80 | 36.11 | 36.74 |
| 5 | 60.76 | 60.91 | 36.57 | 36.87 |
| 6 | 61.20 | 61.06 | 36.97 | 37.02 |
| 7 | 61.60 | 61.31 | 37.33 | 37.21 |
| 8 | 61.99 | 61.73 | 37.64 | 37.49 |
| 9 | 62.38 | 62.28 | 37.94 | 37.85 |
| 10 | 62.78 | 62.86 | 38.26 | 38.26 |
| 11 | 63.18 | 63.35 | 38.61 | 38.68 |
| 12 | 63.55 | 63.64 | 38.98 | 39.08 |
| 13 | 63.89 | 63.74 | 39.36 | 39.45 |
| 14 | 64.21 | 63.72 | 39.75 | 39.84 |
| 15 | 64.54 | 63.74 | 40.13 | 40.28 |
| 16 | 64.90 | 63.90 | 40.51 | 40.81 |
| 17 | 65.29 | 64.28 | 40.89 | 41.39 |
| 18 | 65.74 | 64.90 | 41.29 | 41.96 |
| 19 | 66.23 | 65.71 | 41.70 | 42.44 |
| 20 | 66.75 | 66.66 | 42.10 | 42.82 |
| 21 | 67.26 | 67.63 | 42.49 | 43.15 |
| 22 | 67.72 | 68.52 | 42.85 | 43.49 |
| 23 | 68.10 | 69.24 | 43.19 | 43.87 |
| 24 | 68.37 | 69.72 | 43.49 | 44.28 |
| 25 | 68.55 | 69.94 | 43.76 | 44.67 |
| 26 | 68.69 | 69.96 | 43.98 | 44.97 |
| 27 | 68.83 | 69.87 | 44.17 | 45.13 |
| 28 | 68.99 | 69.80 | 44.34 | 45.16 |
| 29 | 69.22 | 69.86 | 44.50 | 45.13 |
| 30 | 69.51 | 70.13 | 44.70 | 45.11 |