If the Earth had an almost horizontal axis of rotation, rather than an almost vertical one, it would have a very complicated day/night cycle that would probably wreak havoc on the atmosphere and climates.
If the planet is spinning about its horizontal axis, it cannot be tidally locked with the Sun due to the law of conservation of angular momentum. With a 360ish "day" year, the planet would rotate one degree, about its vertical axis, per day.
For one quarter of the year, points north of the equator would receive 24 hours of sun per day, and points south of the equator would receive 24 hours of dark. For the next quarter, there would be a "normal"ish day/night cycle. For the third quarter, points south of the equator would receive 24 hours of sun per day, and points north of the equator would receive 24 hours of dark. For the final quarter, there would,again, be a "normal"ish day/night cycle.
This would probably cause the north and south poles to alternate between desert and tundra. This would, in turn, cause all winds to blow strongly and continuously north for one quarter of the year, and south for one quarter. And God knows what it would do in between.
With two, short, growing seasons and two winters the planet would probably be nigh uninhabitable.
On the other hand, due to a quirk with gravity, the planet would probably, eventually, stop rotating and one side would burn as the other side froze.