Waco is humid and hot, as befits a subtropical city, but the hotter it is, the lower the humidity tends to be and the clearer the skies. Spring and fall are the most pleasant seasons and spring is pleasantly green and flowered at that. Winter can be quite cold.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
| Avg. High | 57 | 62 | 70 | 78 | 85 | 92 | 97 | 97 | 90 | 80 | 68 | 59 | |
| Avg. Low | 35 | 39 | 47 | 54 | 63 | 71 | 74 | 74 | 67 | 57 | 46 | 37 | |
| Precipitation | 1.9 | 2.4 | 2.5 | 3.0 | 4.5 | 3.1 | 2.2 | 1.9 | 2.9 | 3.7 | 2.6 | 2.8 | |
