Casa Grande Weather History | Weather Facts and Figures |
| | Average Temperature (F) | Average Total Precipitation (inches) | | Month | Average High | Average Low | | January | 66.9 | 35.4 | 0.7 | | February | 71.3 | 39.0 | 0.8 | | March | 77.4 | 43.5 | 0.8 | | April | 86.3 | 49.4 | 0.3 | | May | 95.3 | 57.4 | 0.1 | | June | 104.5 | 66.3 | 0.2 | | July | 106.6 | 75.6 | 1.0 | | August | 104.0 | 74.2 | 1.5 | | September | 100.0 | 67.2 | 0.8 | | October | 89.3 | 53.8 | 0.5 | | November | 76.3 | 41.7 | 0.7 | | December | 67.5 | 35.7 | 1.0 | | Year | 87.1 | 53.3 | 8.4 |
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